Contact analysis: non convergent
Altair EmployeeHi. I have been trying to perform a non-linear quasi-static analysis to simulate a contact but it doesn't by any means converge. I don't understant the reason. Could you help me? Thank you. This is the file: https://www.dropbox.com/s/asybtschpa1fpsk/compito_2_13.hm?dl=0
Answers
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Hi Mirino,
please include the following PARAM card.
Control Cards>> PARAM>> EXPRTNL>>CNTSB and run the analysis.
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Hi Prakash
thank you for answering. I have tried including that card but it still doesn't work.
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Hi Mirino,
I shared the modified deck with you, please run the same at your end and check if you are through the error.
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Thank you Prakash, I will try and let you know.
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Hi Prakash, obviously the file you shared with me works. However, I tried activating the cards EXPERTNL and CNTNLSUB and I also tried setting in the NLPARM card NINC=25. However, It doesn't converge. What are the changes you made?
<?xml version="1.0" encoding="UTF-8"?>
<?xml version="1.0" encoding="UTF-8"?>
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Mirino,
Can you remove CNTNLSUB and change the EXPERTNL to CNTSTB instead of YES?
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Hi Prakash
I'm using Hypermesh 12.0. Inside Control cards-->PARAM I have between many options EXPERTNL and CNTNLSUB. Inside EXPERTNL, I can only choose between YES and NO. The same thing for CNTNLSUB. What am I going to do?
<?xml version="1.0" encoding="UTF-8"?>
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Mirino,
could you please let us know what are all updates you have?
You can find the software updates and graphics information from HyperMesh>> Help>> Updates and system information
http://forum.altairh...n-your-machine/
CNTNLSUB is for continuing non linear subcase from a preceeding NL subcase.
So, it is not necessary for you as you have only one subcase.
Can you try with EXPRTNL>> YES and without CNTNLSUB?
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Hi Prakash, I have tried activating only EXPERTNL and not CNTNLSUB, but it still doesn't converge.
<?xml version="1.0" encoding="UTF-8"?>
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However, I have fixed the problem in another way. I opened the file.fem with an editor (Notepad) and I wrote in at the certain point this line:
$PARAM,EXPERTNL,CNTSTB$$And actually it worked finally.
On the other hand, since I had the same problem (non-convergent analysis) with another model, I tried to insert again PARAM,EXPERTNL,CNTSTB. This time it didn't work: LOAD STEP 0.1, 0.2, 0.3 ..., 0.9 were convergent, while LOAD STEP 1.0 wasn't.
Here's the file: https://www.dropbox.com/s/zl54bn18nfpqs4d/supporto_09.hm?dl=0
Subcase 1
LOAD STEP: 1.0000--------------------------------------------------------------------------------Nonlinear Error Measures Gap and Contact Element Status MaximumIter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn--------------------------------------------------------------------------------1 6.23E+01 9.90E+01 5.95E+04 5.95E+04 230 230 0 0 0 0.00E+002 9.64E-04 5.34E+06 4.49E+01 4.39E+05 336 124 0 0 0 0.00E+003 1.22E-03 1.27E-01 4.58E+01 1.03E+01 334 126 0 0 0 0.00E+004 1.40E-03 1.73E-01 4.56E-03 7.17E-04 372 88 0 0 0 0.00E+005 1.39E-03 1.06E-02 2.95E-03 8.20E-05 398 62 0 0 0 0.00E+006 2.73E-03 1.47E+02 3.73E+02 5.49E+02 400 60 0 0 0 0.00E+007 1.39E-03 1.19E+00 5.65E-03 5.09E-03 420 40 0 0 0 0.00E+008 1.14E-03 2.15E-01 1.16E+02 2.54E+01 410 50 0 0 0 0.00E+009 1.17E-03 1.89E-01 5.38E-04 3.41E-05 434 26 0 0 0 0.00E+0010 1.29E-03 1.15E-01 1.01E+00 5.55E-02 436 24 0 0 0 0.00E+00No convergence after 10 iterationsExpert: Continue iterations11 1.30E-03 8.46E-03 2.10E-05 2.40E-07 448 12 0 0 0 0.00E+0012 4.52E+01 9.90E+01 7.05E+03 7.05E+03 246 214 0 0 0 0.00E+0013 5.79E-04 5.79E+06 3.92E-02 2.58E+03 398 62 0 0 0 0.00E+0014 5.23E-04 8.98E-01 8.69E+02 9.14E+02 370 90 0 0 0 0.00E+0015 3.18E-04 3.31E-01 1.57E-02 1.32E-02 402 58 0 0 0 0.00E+00No convergence after 15 iterationsExpert: Continue iterations*** ERROR # 157 ***Error opening the scratch file './supporto_09_1992_s44.rs~'Fortran error code = 9This may be caused by not having the access right to open the file,not enough memory left for the system routines, or some othersystem setup related reasons.This error was detected in subroutine opseqscr.*** ERROR # 158 ***Error encountered when accessing the scratch file.error from subroutine 'xdslrs'Solver error no. = -702This may be caused by insufficient disk space or some othersystem resource related limitations.This error was detected in subroutine bcsprefct.!! NONLINEAR SOLUTION FAILED TO CONVERGE FOR SUBCASE 1 !!Large nonlinear error - no solution saved.Moderate error: saved the last iteration to resultsThis error occurs in module 'nlstatdrv'.************************************************************************RESOURCE USAGE INFORMATION--------------------------MAXIMUM MEMORY USED 337 MBMAXIMUM DISK SPACE USED 1413 MB************************************************************************************************************************************************COMPUTE TIME INFORMATION------------------------EXECUTION STARTED Tue Jun 09 18:47:36 2015EXECUTION COMPLETED Tue Jun 09 19:34:44 2015ELAPSED TIME 00:47:07CPU TIME 00:45:50*************************************************************************** PROGRAM STOPPED: FATAL ERROR(s) ENCOUNTERED.***** END OF REPORT *****For Useful OptiStruct Tips and Tricks, go to the URL:PROGRAM STOPPED DUE TO ERROR.************************************************************************RADIOSS/OptiStruct error termination report printed to file'supporto_09.stat'.************************************************************************A fatal error has occurred during computations:*** ERROR # 157 ***Error opening the scratch file './supporto_09_1992_s44.rs~'Fortran error code = 9This may be caused by not having the access right to open the file,not enough memory left for the system routines, or some othersystem setup related reasons.This error was detected in subroutine opseqscr.************************************************************************==== End of solver screen output ======== Job completed ====0 -
Mirino,
It can be seen from the out file that upto 90% load the model is stable but beyond 90% no convergence is seen.
So, please consider reducing the load.
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Hello,
it looks like there is a io-problem. Take a look at the error 'Error opening the scratch file './supporto_09_1992_s44.rs~' ....
Please check if there is enough disc space and you have all access rights.
Regards,
Mario
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Hi Mario,
Okay then the issue is with the disk space to write the scratch files.
Also, it looks like the run fails when 100% load is applied to the model due to the scratch file.
You may have to free up some memory to get the scratch files written or you can choose a different location to write the scratch files.Please refer to the OptiStruct Run Options (image below)
<?xml version="1.0" encoding="UTF-8"?>
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Hi. I reduced the force by 10% (from 24N to 21.6N) to match the LOAD STEP 0.9 which was convergent. With this new value of the force however, LOAD STEP 0.9 was convergent, while LAOD STEP 1 wasn't. Then, since the EXPERTNL was activated, the LOADSTEP 0.95 was calculated. The bottom line is:
LAOD STEP 0.9998 was convergent
LOAD STEP 1.0000 was NOT convergent.
(Now I no longer have the problem with the disk space since the error is merely: *** ERROR # 941 ***
NON-CONVERGENT NONLINEAR ITERATIONS FOR SUBCASE 1.)
Here's the final steps (from LOAD STEP 0.8 onwards):
LOAD STEP: 0.8000
--------------------------------------------------------------------------------Nonlinear Error Measures Gap and Contact Element Status MaximumIter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn--------------------------------------------------------------------------------1 1.68E-05 4.88E+01 1.20E-10 8.01E-11 460 0 0 0 0 0.00E+002 1.68E-05 4.38E-16 1.20E-10 5.19E-26 460 0 0 0 0 0.00E+00Expert: Adjust parameters and proceedSubcase 1LOAD STEP: 0.9000--------------------------------------------------------------------------------Nonlinear Error Measures Gap and Contact Element Status MaximumIter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn--------------------------------------------------------------------------------1 8.09E-05 7.12E+01 3.48E-13 2.77E-13 460 0 0 0 0 0.00E+002 8.09E-05 9.94E-16 3.48E-13 2.53E-28 460 0 0 0 0 0.00E+00Expert: Adjust parameters and proceedSubcase 1LOAD STEP: 1.0000--------------------------------------------------------------------------------Nonlinear Error Measures Gap and Contact Element Status MaximumIter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn--------------------------------------------------------------------------------1 5.61E+01 9.90E+01 5.95E+04 5.95E+04 230 230 0 0 0 0.00E+002 9.64E-04 4.81E+06 4.49E+01 3.95E+05 336 124 0 0 0 0.00E+003 1.22E-03 1.26E-01 4.57E+01 1.03E+01 334 126 0 0 0 0.00E+004 1.40E-03 1.70E-01 4.56E-03 7.17E-04 372 88 0 0 0 0.00E+005 1.39E-03 1.10E-02 2.96E-03 8.22E-05 398 62 0 0 0 0.00E+006 2.72E-03 1.47E+02 3.71E+02 5.47E+02 400 60 0 0 0 0.00E+007 1.39E-03 1.18E+00 5.64E-03 5.07E-03 420 40 0 0 0 0.00E+008 1.14E-03 2.16E-01 1.15E+02 2.53E+01 410 50 0 0 0 0.00E+009 1.17E-03 1.91E-01 5.38E-04 3.36E-05 434 26 0 0 0 0.00E+0010 1.28E-03 1.09E-01 7.16E-01 3.77E-02 436 24 0 0 0 0.00E+00No convergence after 10 iterationsExpert: Continue iterations11 1.30E-03 1.00E-02 1.91E-05 2.64E-07 448 12 0 0 0 0.00E+0012 4.06E+01 9.90E+01 7.05E+03 7.05E+03 246 214 0 0 0 0.00E+0013 5.79E-04 5.21E+06 3.92E-02 2.32E+03 398 62 0 0 0 0.00E+0014 5.23E-04 8.99E-01 8.69E+02 9.13E+02 370 90 0 0 0 0.00E+0015 3.17E-04 3.33E-01 1.57E-02 1.33E-02 402 58 0 0 0 0.00E+00No convergence after 15 iterationsExpert: Continue iterations16 3.02E-04 4.38E-02 8.51E-03 8.07E-04 424 36 0 0 0 0.00E+0017 2.97E-04 2.17E-01 2.55E+00 2.05E-01 432 28 0 0 0 0.00E+0018 3.46E-04 2.10E+01 5.24E+00 2.47E+00 436 24 0 0 0 0.00E+0019 4.14E-04 2.24E+01 5.02E-04 2.01E-04 448 12 0 0 0 0.00E+0020 1.10E-01 9.87E+01 1.34E+04 1.33E+04 274 186 0 0 0 0.00E+00No convergence after 20 iterationsExpert: Back off, adjust and retrySubcase 1LOAD STEP: 0.9500--------------------------------------------------------------------------------Nonlinear Error Measures Gap and Contact Element Status MaximumIter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn--------------------------------------------------------------------------------1 2.50E-04 6.42E+01 2.36E+02 1.59E+02 433 27 0 0 0 0.00E+002 2.48E-04 8.30E-03 1.76E-03 3.74E-05 446 14 0 0 0 0.00E+00Expert: Adjust parameters and proceedSubcase 1LOAD STEP: 1.0000--------------------------------------------------------------------------------Nonlinear Error Measures Gap and Contact Element Status MaximumIter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn--------------------------------------------------------------------------------1 2.18E+00 9.90E+01 5.86E+03 5.86E+03 228 232 0 0 0 0.00E+002 2.64E-03 7.34E+04 1.68E-02 1.51E+01 424 36 0 0 0 0.00E+003 1.83E-03 3.91E-01 1.40E+00 4.15E-01 442 18 0 0 0 0.00E+004 2.09E-03 1.84E+02 3.63E+03 6.07E+03 362 98 0 0 0 0.00E+005 4.23E-04 3.77E+01 5.76E+02 1.25E+03 380 80 0 0 0 0.00E+006 2.92E-04 3.24E-01 8.36E-01 3.62E-01 394 66 0 0 0 0.00E+007 2.92E-04 3.18E-02 8.42E-03 8.59E-04 420 40 0 0 0 0.00E+008 2.85E-04 7.97E-02 7.63E-04 5.01E-05 430 30 0 0 0 0.00E+009 3.37E-04 2.40E+01 4.98E+00 2.67E+00 436 24 0 0 0 0.00E+0010 4.16E-04 2.55E+01 1.27E+00 4.96E-01 438 22 0 0 0 0.00E+00No convergence after 10 iterationsExpert: Back off, adjust and retrySubcase 1LOAD STEP: 0.9750--------------------------------------------------------------------------------Nonlinear Error Measures Gap and Contact Element Status MaximumIter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn--------------------------------------------------------------------------------1 2.47E-04 1.72E+00 9.14E+00 5.48E-02 440 20 0 0 0 0.00E+002 2.46E-04 1.66E-02 3.18E-12 9.38E-15 440 20 0 0 0 0.00E+00Expert: Adjust parameters and proceedSubcase 1LOAD STEP: 1.0000--------------------------------------------------------------------------------Nonlinear Error Measures Gap and Contact Element Status MaximumIter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn--------------------------------------------------------------------------------1 2.15E+00 9.90E+01 5.84E+03 5.83E+03 230 230 0 0 0 0.00E+002 2.67E-03 7.21E+04 1.66E-02 1.48E+01 424 36 0 0 0 0.00E+003 1.83E-03 4.00E-01 1.40E+00 4.11E-01 442 18 0 0 0 0.00E+004 2.09E-03 1.84E+02 3.63E+03 6.07E+03 362 98 0 0 0 0.00E+005 4.23E-04 3.76E+01 5.75E+02 1.25E+03 380 80 0 0 0 0.00E+006 2.92E-04 3.24E-01 8.36E-01 3.62E-01 394 66 0 0 0 0.00E+007 2.92E-04 3.09E-02 8.42E-03 8.59E-04 420 40 0 0 0 0.00E+008 2.85E-04 8.29E-02 7.63E-04 5.01E-05 430 30 0 0 0 0.00E+009 3.37E-04 2.38E+01 4.98E+00 2.67E+00 436 24 0 0 0 0.00E+0010 4.16E-04 2.54E+01 1.27E+00 4.96E-01 438 22 0 0 0 0.00E+00No convergence after 10 iterationsExpert: Back off, adjust and retrySubcase 1LOAD STEP: 0.9875--------------------------------------------------------------------------------Nonlinear Error Measures Gap and Contact Element Status MaximumIter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn--------------------------------------------------------------------------------1 2.47E-04 3.48E-01 3.35E-12 5.59E-15 440 20 0 0 0 0.00E+002 2.47E-04 1.25E-10 3.00E-12 2.67E-22 440 20 0 0 0 0.00E+00Expert: Adjust parameters and proceedSubcase 1LOAD STEP: 1.0000--------------------------------------------------------------------------------Nonlinear Error Measures Gap and Contact Element Status MaximumIter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn--------------------------------------------------------------------------------1 2.15E+00 9.90E+01 5.84E+03 5.83E+03 230 230 0 0 0 0.00E+002 2.67E-03 7.21E+04 1.66E-02 1.48E+01 424 36 0 0 0 0.00E+003 1.83E-03 4.01E-01 1.40E+00 4.11E-01 442 18 0 0 0 0.00E+004 2.09E-03 1.84E+02 3.63E+03 6.07E+03 362 98 0 0 0 0.00E+005 4.23E-04 3.76E+01 5.76E+02 1.25E+03 380 80 0 0 0 0.00E+006 2.92E-04 3.20E-01 8.36E-01 3.62E-01 394 66 0 0 0 0.00E+007 2.92E-04 3.04E-02 8.42E-03 8.59E-04 420 40 0 0 0 0.00E+008 2.85E-04 8.20E-02 7.63E-04 5.01E-05 430 30 0 0 0 0.00E+009 3.37E-04 2.38E+01 4.98E+00 2.67E+00 436 24 0 0 0 0.00E+0010 4.16E-04 2.54E+01 1.27E+00 4.96E-01 438 22 0 0 0 0.00E+00No convergence after 10 iterationsExpert: Back off, adjust and retrySubcase 1LOAD STEP: 0.9938--------------------------------------------------------------------------------Nonlinear Error Measures Gap and Contact Element Status MaximumIter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn--------------------------------------------------------------------------------1 2.47E-04 2.66E-01 2.67E-12 2.88E-15 440 20 0 0 0 0.00E+002 2.47E-04 3.29E-10 2.86E-12 4.51E-22 440 20 0 0 0 0.00E+00Expert: Adjust parameters and proceedSubcase 1LOAD STEP: 1.0000--------------------------------------------------------------------------------Nonlinear Error Measures Gap and Contact Element Status MaximumIter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn--------------------------------------------------------------------------------1 2.15E+00 9.90E+01 5.84E+03 5.83E+03 230 230 0 0 0 0.00E+002 2.67E-03 7.21E+04 1.66E-02 1.48E+01 424 36 0 0 0 0.00E+003 1.83E-03 4.01E-01 1.40E+00 4.11E-01 442 18 0 0 0 0.00E+004 2.09E-03 1.84E+02 3.63E+03 6.07E+03 362 98 0 0 0 0.00E+005 4.23E-04 3.77E+01 5.76E+02 1.25E+03 380 80 0 0 0 0.00E+006 2.92E-04 3.21E-01 8.36E-01 3.62E-01 394 66 0 0 0 0.00E+007 2.92E-04 3.06E-02 8.42E-03 8.59E-04 420 40 0 0 0 0.00E+008 2.85E-04 8.61E-02 7.63E-04 5.01E-05 430 30 0 0 0 0.00E+009 3.37E-04 2.39E+01 4.98E+00 2.67E+00 436 24 0 0 0 0.00E+0010 4.16E-04 2.54E+01 1.27E+00 4.96E-01 438 22 0 0 0 0.00E+00No convergence after 10 iterationsExpert: Back off, adjust and retrySubcase 1LOAD STEP: 0.9969--------------------------------------------------------------------------------Nonlinear Error Measures Gap and Contact Element Status MaximumIter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn--------------------------------------------------------------------------------1 2.47E-04 3.49E-01 2.45E-12 2.82E-15 440 20 0 0 0 0.00E+002 2.47E-04 3.43E-10 2.54E-12 4.80E-22 440 20 0 0 0 0.00E+00Expert: Adjust parameters and proceedSubcase 1LOAD STEP: 1.0000--------------------------------------------------------------------------------Nonlinear Error Measures Gap and Contact Element Status MaximumIter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn--------------------------------------------------------------------------------1 2.15E+00 9.90E+01 5.84E+03 5.83E+03 230 230 0 0 0 0.00E+002 2.67E-03 7.21E+04 1.67E-02 1.48E+01 424 36 0 0 0 0.00E+003 1.83E-03 4.00E-01 1.40E+00 4.11E-01 442 18 0 0 0 0.00E+004 2.09E-03 1.84E+02 3.63E+03 6.07E+03 362 98 0 0 0 0.00E+005 4.23E-04 3.76E+01 5.76E+02 1.25E+03 380 80 0 0 0 0.00E+006 2.92E-04 3.20E-01 8.36E-01 3.62E-01 394 66 0 0 0 0.00E+007 2.92E-04 2.94E-02 8.42E-03 8.59E-04 420 40 0 0 0 0.00E+008 2.85E-04 8.36E-02 7.63E-04 5.01E-05 430 30 0 0 0 0.00E+009 3.37E-04 2.38E+01 4.98E+00 2.67E+00 436 24 0 0 0 0.00E+0010 4.16E-04 2.54E+01 1.27E+00 4.96E-01 438 22 0 0 0 0.00E+00No convergence after 10 iterationsExpert: Back off, adjust and retrySubcase 1LOAD STEP: 0.9984--------------------------------------------------------------------------------Nonlinear Error Measures Gap and Contact Element Status MaximumIter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn--------------------------------------------------------------------------------1 2.47E-04 6.09E-01 3.16E-12 4.98E-15 440 20 0 0 0 0.00E+002 2.47E-04 2.66E-09 2.70E-12 3.41E-21 440 20 0 0 0 0.00E+00Expert: Adjust parameters and proceedSubcase 1LOAD STEP: 1.0000--------------------------------------------------------------------------------Nonlinear Error Measures Gap and Contact Element Status MaximumIter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn--------------------------------------------------------------------------------1 2.15E+00 9.90E+01 5.84E+03 5.83E+03 230 230 0 0 0 0.00E+002 2.67E-03 7.21E+04 1.67E-02 1.48E+01 424 36 0 0 0 0.00E+003 1.83E-03 4.01E-01 1.40E+00 4.11E-01 442 18 0 0 0 0.00E+004 2.09E-03 1.84E+02 3.63E+03 6.07E+03 362 98 0 0 0 0.00E+005 4.23E-04 3.77E+01 5.76E+02 1.25E+03 380 80 0 0 0 0.00E+006 2.92E-04 3.22E-01 8.36E-01 3.62E-01 394 66 0 0 0 0.00E+007 2.92E-04 3.07E-02 8.42E-03 8.59E-04 420 40 0 0 0 0.00E+008 2.85E-04 8.09E-02 7.63E-04 5.01E-05 430 30 0 0 0 0.00E+009 3.37E-04 2.39E+01 4.98E+00 2.67E+00 436 24 0 0 0 0.00E+0010 4.16E-04 2.55E+01 1.27E+00 4.96E-01 438 22 0 0 0 0.00E+00No convergence after 10 iterationsExpert: Back off, adjust and retrySubcase 1LOAD STEP: 0.9992--------------------------------------------------------------------------------Nonlinear Error Measures Gap and Contact Element Status MaximumIter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn--------------------------------------------------------------------------------1 2.47E-04 1.17E+00 2.65E-12 8.11E-15 440 20 0 0 0 0.00E+002 2.47E-04 1.97E-09 2.45E-12 3.13E-21 440 20 0 0 0 0.00E+00Expert: Adjust parameters and proceedSubcase 1LOAD STEP: 1.0000--------------------------------------------------------------------------------Nonlinear Error Measures Gap and Contact Element Status MaximumIter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn--------------------------------------------------------------------------------1 2.15E+00 9.90E+01 5.84E+03 5.83E+03 230 230 0 0 0 0.00E+002 2.67E-03 7.21E+04 1.67E-02 1.48E+01 424 36 0 0 0 0.00E+003 1.83E-03 4.00E-01 1.40E+00 4.11E-01 442 18 0 0 0 0.00E+004 2.09E-03 1.84E+02 3.63E+03 6.07E+03 362 98 0 0 0 0.00E+005 4.23E-04 3.76E+01 5.76E+02 1.25E+03 380 80 0 0 0 0.00E+006 2.92E-04 3.18E-01 8.36E-01 3.62E-01 394 66 0 0 0 0.00E+007 2.92E-04 3.07E-02 8.42E-03 8.59E-04 420 40 0 0 0 0.00E+008 2.85E-04 8.49E-02 7.63E-04 5.01E-05 430 30 0 0 0 0.00E+009 3.37E-04 2.40E+01 4.98E+00 2.67E+00 436 24 0 0 0 0.00E+0010 4.16E-04 2.55E+01 1.27E+00 4.96E-01 438 22 0 0 0 0.00E+00No convergence after 10 iterationsExpert: Back off, adjust and retrySubcase 1LOAD STEP: 0.9996--------------------------------------------------------------------------------Nonlinear Error Measures Gap and Contact Element Status MaximumIter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn--------------------------------------------------------------------------------1 2.47E-04 2.28E+00 3.32E-12 1.46E-14 440 20 0 0 0 0.00E+002 2.47E-04 1.42E-09 3.63E-12 2.30E-21 440 20 0 0 0 0.00E+00Expert: Adjust parameters and proceedSubcase 1LOAD STEP: 1.0000--------------------------------------------------------------------------------Nonlinear Error Measures Gap and Contact Element Status MaximumIter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn--------------------------------------------------------------------------------1 2.15E+00 9.90E+01 5.84E+03 5.83E+03 230 230 0 0 0 0.00E+002 2.67E-03 7.21E+04 1.67E-02 1.48E+01 424 36 0 0 0 0.00E+003 1.83E-03 4.00E-01 1.40E+00 4.11E-01 442 18 0 0 0 0.00E+004 2.09E-03 1.84E+02 3.63E+03 6.07E+03 362 98 0 0 0 0.00E+005 4.23E-04 3.76E+01 5.76E+02 1.25E+03 380 80 0 0 0 0.00E+006 2.92E-04 3.20E-01 8.36E-01 3.62E-01 394 66 0 0 0 0.00E+007 2.92E-04 2.98E-02 8.42E-03 8.59E-04 420 40 0 0 0 0.00E+008 2.85E-04 8.83E-02 7.63E-04 5.01E-05 430 30 0 0 0 0.00E+009 3.37E-04 2.39E+01 4.98E+00 2.67E+00 436 24 0 0 0 0.00E+0010 4.16E-04 2.55E+01 1.27E+00 4.96E-01 438 22 0 0 0 0.00E+00No convergence after 10 iterationsExpert: Back off, adjust and retrySubcase 1LOAD STEP: 0.9998--------------------------------------------------------------------------------Nonlinear Error Measures Gap and Contact Element Status MaximumIter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn--------------------------------------------------------------------------------1 2.48E-04 4.46E+00 2.68E-12 3.24E-14 440 20 0 0 0 0.00E+002 2.48E-04 1.48E-08 3.09E-12 2.49E-20 440 20 0 0 0 0.00E+00Expert: Adjust parameters and proceedSubcase 1LOAD STEP: 1.0000--------------------------------------------------------------------------------Nonlinear Error Measures Gap and Contact Element Status MaximumIter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn--------------------------------------------------------------------------------1 2.15E+00 9.90E+01 5.84E+03 5.83E+03 230 230 0 0 0 0.00E+002 2.67E-03 7.21E+04 1.67E-02 1.48E+01 424 36 0 0 0 0.00E+003 1.83E-03 4.01E-01 1.40E+00 4.11E-01 442 18 0 0 0 0.00E+004 2.09E-03 1.84E+02 3.63E+03 6.07E+03 362 98 0 0 0 0.00E+005 4.23E-04 3.77E+01 5.75E+02 1.25E+03 380 80 0 0 0 0.00E+006 2.92E-04 3.25E-01 8.36E-01 3.62E-01 394 66 0 0 0 0.00E+007 2.92E-04 3.28E-02 8.42E-03 8.59E-04 420 40 0 0 0 0.00E+008 2.85E-04 8.66E-02 7.63E-04 5.01E-05 430 30 0 0 0 0.00E+009 3.37E-04 2.39E+01 4.98E+00 2.67E+00 436 24 0 0 0 0.00E+0010 4.16E-04 2.54E+01 1.27E+00 4.96E-01 438 22 0 0 0 0.00E+00No convergence after 10 iterationsExpert: Terminate nonlinear process!! NONLINEAR SOLUTION FAILED TO CONVERGE FOR SUBCASE 1 !!Large nonlinear error - no solution saved.*** ERROR # 941 ***NON-CONVERGENT NONLINEAR ITERATIONS FOR SUBCASE 1Suggestions:(Scratch disk space usage for starting iteration = 1347 MB)(Running out-of-core solution)Volume = 9.56948E+05 Mass = 7.55989E-03Subcase Compliance1 0.000000E+00************************************************************************ANALYSIS COMPLETED.************************************************************************RESOURCE USAGE INFORMATION--------------------------MAXIMUM MEMORY USED 337 MBMAXIMUM DISK SPACE USED 1413 MB************************************************************************************************************************************************COMPUTE TIME INFORMATION------------------------EXECUTION STARTED Wed Jun 10 08:56:19 2015EXECUTION COMPLETED Wed Jun 10 12:11:31 2015ELAPSED TIME 03:15:11CPU TIME 03:07:19*************************************************************************** PROGRAM STOPPED: FATAL ERROR(s) ENCOUNTERED.***** END OF REPORT *****For Useful OptiStruct Tips and Tricks, go to the URL:PROGRAM STOPPED DUE TO ERROR.************************************************************************RADIOSS/OptiStruct error termination report printed to file'supporto_09.stat'.************************************************************************A fatal error has occurred during computations:*** ERROR # 941 ***NON-CONVERGENT NONLINEAR ITERATIONS FOR SUBCASE 1Suggestions:ANALYSIS COMPLETED....************************************************************************==== End of solver screen output ====0 -
Hi Mirino,
Okay, so the model is stable with 99.8% of the load and anything beyond it is not able to converge.
0 -
Hi Prakash. 99.98%. How is that possible and how can I fix this problem?
0 -
Hi,
it seems to be a contact problem.
As you can see, up to load 0.9 there is no contact. Then at 1.0 exactly half of the elements (230) are in contact. From this point the iteration has problems (since before there is nothing to iterate).
Hints:
please check all your contact parameters
be sure you know what all the parameters are doing
i prefer for a normal shell-shell open contact: TYPE=SLIDE, MORIENT=OPENGAP, SRCHDIS=1.5 x distance of contact opening (be sure to have different contacts for different distances) , ADJUST=NO, DISCRETE=S2S for HW13)
if you have only contact non-linearity (linear material and load), then change NLPARM to:
NINC=1, KSTEP=1, MAXITER=50
(try to lower the convergence criteria and take a look what happens)
Best regards,
Mario
0 -
Mario,
Yes, when the parts are in contact there could be stability issues which leads to a non convergent solution at the end.
Most of the users think that search distance is the distance between parts which have contacts but it is not. As you said one should have to learn what the parameters in the contact card actually mean.
0 -
Hi. I have been able to make the two analysis run. I used a property with card image PCONT and inside NLPARM I set the value as:
NINC=10
MAXITER=25
CONV=UPW
EPSU, EPSP, EPSW as default.
To make the analysis run I increased the magnitude of the force. As a result of this, in one of the analysis if the magnitude of the force is <54000N the analysis doesn't converge. If the magnitude is >54000N, the analysis converge.
0 -
Equally, if I want a force with an magnitude less than 55 000 N, setting NINC=1 as Mario suggested, the analysis converges.
0 -
Hi everibody!
I have the same problem with my simulation. When it starts last iterations i have problem on UPW and after many simulation i really don't know ho to fix it. We tryied first reducing the tollerance on EPSU EPSW and EPSW, then reducing Ksteps (from 5 to 1) and increasing NINC (from 10 to 20).
After some attempts i decide to reduce load (although is not properly correct for the fisic model that i'm trying to simulate) from 60000 to 10000.
EXPERTNL and CNTSTB are activate. What can i try to fix this issue?
0 -
0
-
The last analysis is still running
************************************************************************
** **
** **
** OptiStruct 2017.1 **
** **
** Advanced Engineering Analysis, Design and **
** Optimization Software from Altair Engineering, Inc. **
** **
** **
** Windows 10 (Build 9200) DESKTOP-AERLR72 **
** 8 CPU: Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz **
** 12189 MB RAM, 21129 MB swap **
** **
** Build tag: 0862567_9433171_Ce64RBW8UH14M:128708-1 4000000014001 **
************************************************************************
** COPYRIGHT (C) 1996-2017 Altair Engineering, Inc. **
** All Rights Reserved. Copyright notice does not imply publication. **
** Contains trade secrets of Altair Engineering, Inc. **
** Decompilation or disassembly of this software strictly prohibited. **
************************************************************************
*** OptiStruct defaults set from:
install config file: C:\Program Files\Altair\2017\/hwsolvers/optistruct.cfg.
NOTE # 9199
MSGLMT=STRICT is active, all messages will be printed.
You can suppress some less important warning messages by use of
MSGLMT=BRIEF or UNREF (in config file or in the input data).2 PARAM(s) were set:
AUTOMSET,YES
EXPERTNL,CNTSTB*** WARNING # 4783
Finite sliding is ignored for contact because there is no large-displacement
analysis.*** INFORMATION # 815
The total number of rigid elements, whose rotational dependent d.o.f.
are removed because there is no need to constrain those d.o.f., is 47.*** INFORMATION # 3203
In order to produce more realistic results with nonlinear friction, gap offset
was automatically set to NO. This may cause failure of rigid body balance,
especially on models without SPC support. To activate gap offset,
set GAPOFFS to YES on the GAPPRM card.*** INFORMATION # 3433
MUMPS solver is used by default for nonlinear analysis at subcase 3.The amount of memory allocated for the run is 2461 MB.
This run will use in-core processing in the solver.
MUMPS solver will allocate memory separately and may
run in different core (in/out) mode.************************************************************************
OPTIMIZATION FILE AND PARAMETER INFORMATION :
---------------------------------------------
FEM model file :
D:/Università/PAC/Progetto motoriduttore/simulazione modello completo/mesh definitiva nuovi contatti linguetta2.fem
Output files prefix :
D:/Università/PAC/Progetto motoriduttore/simulazione modello completo/mesh definitiva nuovi contatti linguetta2
Model read from files:
D:/Università/PAC/Progetto motoriduttore/simulazione modello completo/mesh definitiva nuovi contatti linguetta2.fem
************************************************************************************************************************************************
FINITE ELEMENT MODEL DATA INFORMATION :
---------------------------------------
Total # of Grids (Structural) : 870119
Total # of Elements Excluding Contact: 734147
Total # of N2S Contact Elements : 10819 (internally created CGAPG)
Total # of Rigid Elements : 54
Total # of Rigid Element Constraints : 8520
Total # of Degrees of Freedom : 2650431
(Structural)
Total # of Non-zero Stiffness Terms : 100563930Element Type Information
------------------------
CHEXA Elements : 692019
CTETRA Elements : 35020
CPENTA Elements : 7092
CROD Elements : 16
Load and Boundary Information
-----------------------------
FORCE Sets : 1
SPC Sets : 1
Material and Property Information
---------------------------------
PSOLID Cards : 2
PROD Cards : 1
PCONT Cards : 2
MAT1 Cards : 2
************************************************************************************************************************************************
OPTIMIZATION PROBLEM PARAMETERS :
---------------------------------
NO DESIGN MATERIAL OR DESIGN VARIABLES FOUND : ANALYSIS ONLY
------------------------
Static Subcase Summary :
------------------------
---------- -------- --------
Subcase ID SPC ID FORCE ID
---------- -------- --------
3 1 2
---------- -------- --------
Run Type : Analysis Only
Run at location :
/Università/PAC/Progetto motoriduttore/simulazione modello completo/
Scratch file directory :/Università/PAC/Progetto motoriduttore/simulazione modello completo/
Free space: 843.359 GB
Number of CPU processors : 1
************************************************************************************************************************************************
MEMORY ESTIMATION INFORMATION :
-------------------------------
Solver Type is: Sparse-Matrix Solver
Direct MethodCurrent Memory (RAM) : 2461 MB
(Note: MUMPS Solver Allocates Memory Separately.)
Estimated Minimum Memory (RAM) for Out of Core Solution : 11671 MB
Recommended Memory (RAM) for Out of Core Solution : 11671 MB
Recommended Memory (RAM) for In-Core Solution : 55962 MB
(Note: Memory for MUMPS Solver is Included in Estimation.)
(Note: The Minimum Memory Requirement is limited by Assembly Module.)
(Note: Use param,HASHASSM,yes to avoid assembly module memory bottleneck)DISK SPACE ESTIMATION INFORMATION :
-----------------------------------
Estimated Disk Space for Output Data Files : 228 MB
Estimated Scratch Disk Space for In-Core Solution : 1398 MB
Estimated Scratch Disk Space for Out of Core Solution : 45104 MB
************************************************************************
BEGINNING ANALYSIS SOLUTION ....
************************************************************************
ANALYSIS RESULTS :
------------------ITERATION 0
Element # 1156, element type PENTA.
WARNING - Outside of recommended range: Tria Vertex Angle = 10.554
lower limit = 15.000
WARNING - Outside of recommended range: Face Skew Angle = 69.419
upper limit = 60.000
WARNING - Outside of recommended range: Edge Angle = 79.444
upper limit = 75.000Element # 1157, element type PENTA.
WARNING - Outside of recommended range: Tria Vertex Angle = 10.558
lower limit = 15.000
WARNING - Outside of recommended range: Face Skew Angle = 69.414
upper limit = 60.000
WARNING - Outside of recommended range: Edge Angle = 79.442
upper limit = 75.000Element # 1158, element type PENTA.
WARNING - Outside of recommended range: Tria Vertex Angle = 10.558
lower limit = 15.000
WARNING - Outside of recommended range: Face Skew Angle = 69.414
upper limit = 60.000
WARNING - Outside of recommended range: Edge Angle = 79.440
upper limit = 75.000
NOTE : other similar error/warning messages were suppressed,
use PARAM,CHECKEL,FULL to obtain full reportElement # 699747, element type TET10.
WARNING - Outside of recommended range: Edge Angle = 75.385
upper limit = 75.000Element # 699828, element type TET10.
WARNING - Outside of recommended range: Edge Angle = 76.233
upper limit = 75.000Element # 699876, element type TET10.
WARNING - Outside of recommended range: Edge Angle = 75.622
upper limit = 75.000
Element Quality Check Summary
-----------------------------
Total # of elements that exceeded recommended range (warning) = 587
Note: Only element with the highest violation of each check is listed below.
Recommended range violations:
------------------------------------------------------------------------------
Element Property # of Recommended Range Max. Viol. Elem.
Viol. Lower Upper Value type No.
------- ------------------- -------- --------- --------- --------- --- -------
TET10 Edge Angle 5 -- 75.00 76.63 U 699881
PENTA Skew Angle 582 -- 60.00 72.47 U 328210
PENTA Edge Angle 446 -- 75.00 81.04 U 328211
PENTA TRIA Vertex Angle 446 15.00 165.00 8.96 L 328210
List of Auto-SPC d.o.f.s for loadcase 3
Total number of Auto-SPC d.o.f.s = 39099------------------------------
Grid No. Component
------------------------------
96664 4 6
96665 4 6
96666 4 6
96667 4 6
96733 4 6
96760 4 6
96787 4 6
96790 4 6
96793 4 6
96796 4 6
96979 4 6
96980 4 6
96981 4 6
96982 4 6
96983 4 6
96984 4 6
97019 4 6
97021 4 6
97023 4 6
97025 4 6
97027 4 6
97029 4 6
97031 4 6
97033 4 6
97071 4 6
97072 4 6
97073 4 6
97074 4 6
97075 4 6
97076 4 6
97077 4 6
97078 4 6
97079 4 6
97081 4 6
97082 4 6
97084 4 6
97085 4 6
97087 4 6
97088 4 6
97090 4 6
97105 4 6
97106 4 6
97131 4 6
97132 4 6
97133 4 6
97134 4 6
97135 4 6
97136 4 6
97137 4 6
97138 4 6
------------------------------Because of PARAM, PRGPST, 100, Auto-SPC printing is limited to 100 dofs.
Nonlinear iteration summary for Subcase 3
Subcase 3 Load step: 5.0000E-02
--------------------------------------------------------------------------------
Nonlinear Error Measures Gap and Contact Element Status Maximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn
--------------------------------------------------------------------------------
1 2.84E-07 9.90E+01 2.41E-01 2.41E-01 8874 1945 1945 0 0 0.00E+00
2 3.29E-07 1.04E-01 6.99E-03 5.41E-04 9601 1218 1218 0 0 0.00E+00
3 3.42E-07 2.00E-02 7.89E-03 1.82E-04 9917 902 902 0 0 0.00E+00
4 3.42E-07 4.62E-04 1.65E-04 2.06E-07 10071 748 748 0 0 0.00E+00
Expert: Adjust parameters and proceed
Subcase 3 Load step: 1.0000E-01
--------------------------------------------------------------------------------
Nonlinear Error Measures Gap and Contact Element Status Maximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn
--------------------------------------------------------------------------------
1 7.47E-07 5.36E+01 1.23E-02 6.54E-03 10204 615 615 0 0 0.00E+00
2 7.47E-07 2.69E-04 6.95E-06 1.91E-08 10277 542 542 0 0 0.00E+00
Expert: Adjust parameters and proceed
Subcase 3 Load step: 1.5000E-01
--------------------------------------------------------------------------------
Nonlinear Error Measures Gap and Contact Element Status Maximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn
--------------------------------------------------------------------------------
1 1.22E-06 3.82E+01 1.02E-02 3.79E-03 10360 459 459 0 0 0.00E+00
2 1.22E-06 2.89E-04 2.57E-07 2.70E-10 10411 408 408 0 0 0.00E+00
Expert: Adjust parameters and proceed
Subcase 3 Load step: 2.0000E-01
--------------------------------------------------------------------------------
Nonlinear Error Measures Gap and Contact Element Status Maximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn
--------------------------------------------------------------------------------
1 1.78E-06 3.03E+01 1.39E-03 3.18E-04 10457 362 362 0 0 0.00E+00
2 1.78E-06 6.52E-04 3.80E-08 5.87E-11 10483 336 336 0 0 0.00E+00
Expert: Adjust parameters and proceed
Subcase 3 Load step: 2.5000E-01
--------------------------------------------------------------------------------
Nonlinear Error Measures Gap and Contact Element Status Maximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn
--------------------------------------------------------------------------------
1 2.42E-06 2.55E+01 4.66E-04 1.08E-04 10512 307 307 0 0 0.00E+00
2 2.42E-06 1.05E-04 6.41E-06 3.06E-09 10527 292 292 0 0 0.00E+00
Expert: Adjust parameters and proceed
Subcase 3 Load step: 3.0000E-01
--------------------------------------------------------------------------------
Nonlinear Error Measures Gap and Contact Element Status Maximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn
--------------------------------------------------------------------------------
1 3.14E-06 2.18E+01 1.54E-04 2.93E-05 10554 265 265 0 0 0.00E+00
2 3.14E-06 1.73E-04 2.25E-08 4.18E-11 10568 251 251 0 0 0.00E+00
Expert: Adjust parameters and proceed
Subcase 3 Load step: 3.5000E-01
--------------------------------------------------------------------------------
Nonlinear Error Measures Gap and Contact Element Status Maximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn
--------------------------------------------------------------------------------
1 3.88E-06 1.84E+01 1.88E-05 2.91E-06 10591 228 228 0 0 0.00E+00
2 3.88E-06 1.50E-04 4.86E-09 1.15E-11 10601 218 218 0 0 0.00E+00
Expert: Adjust parameters and proceed
Subcase 3 Load step: 4.0000E-01
--------------------------------------------------------------------------------
Nonlinear Error Measures Gap and Contact Element Status Maximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn
--------------------------------------------------------------------------------
1 4.61E-06 1.53E+01 1.80E-08 2.35E-09 10624 195 195 0 0 0.00E+00
2 4.61E-06 8.29E-05 9.75E-07 1.09E-09 10625 194 194 0 0 0.00E+00
Expert: Adjust parameters and proceed
Subcase 3 Load step: 4.5000E-01
--------------------------------------------------------------------------------
Nonlinear Error Measures Gap and Contact Element Status Maximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn
--------------------------------------------------------------------------------
1 5.31E-06 1.27E+01 4.91E-05 6.34E-06 10636 183 183 0 0 0.00E+00
2 5.31E-06 4.93E-04 3.47E-07 4.43E-10 10637 182 182 0 0 0.00E+00
Expert: Adjust parameters and proceed
Subcase 3 Load step: 5.0000E-01
--------------------------------------------------------------------------------
Nonlinear Error Measures Gap and Contact Element Status Maximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn
--------------------------------------------------------------------------------
1 5.98E-06 1.09E+01 1.36E-04 1.51E-05 10644 175 175 0 0 0.00E+00
2 5.98E-06 1.91E-04 1.74E-10 8.01E-13 10644 175 175 0 0 0.00E+00
Expert: Adjust parameters and proceed
Subcase 3 Load step: 5.5000E-01
--------------------------------------------------------------------------------
Nonlinear Error Measures Gap and Contact Element Status Maximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn
--------------------------------------------------------------------------------
1 6.62E-06 9.52E+00 2.13E-08 1.72E-09 10674 145 145 0 0 0.00E+00
2 6.62E-06 4.45E-05 9.46E-10 2.12E-14 10683 136 136 0 0 0.00E+00
Expert: Adjust parameters and proceed
Subcase 3 Load step: 6.0000E-01
--------------------------------------------------------------------------------
Nonlinear Error Measures Gap and Contact Element Status Maximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn
--------------------------------------------------------------------------------
1 7.25E-06 8.52E+00 1.46E-06 1.12E-07 10699 120 120 0 0 0.00E+00
2 7.25E-06 5.72E-05 5.33E-10 3.67E-14 10706 113 113 0 0 0.00E+00
Expert: Adjust parameters and proceed
Subcase 3 Load step: 6.5000E-01
--------------------------------------------------------------------------------
Nonlinear Error Measures Gap and Contact Element Status Maximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn
--------------------------------------------------------------------------------
1 7.87E-06 7.76E+00 7.48E-07 5.43E-08 10714 105 105 0 0 0.00E+00
2 7.87E-06 6.05E-05 1.45E-10 2.80E-14 10718 101 101 0 0 0.00E+00
Expert: Adjust parameters and proceed
Subcase 3 Load step: 7.0000E-01
--------------------------------------------------------------------------------
Nonlinear Error Measures Gap and Contact Element Status Maximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn
--------------------------------------------------------------------------------
1 8.48E-06 7.14E+00 1.34E-08 9.34E-10 10728 91 91 0 0 0.00E+00
2 8.48E-06 5.72E-05 1.04E-05 2.71E-09 10730 89 89 0 0 0.00E+00
Expert: Adjust parameters and proceed
Subcase 3 Load step: 7.5000E-01
--------------------------------------------------------------------------------
Nonlinear Error Measures Gap and Contact Element Status Maximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn
--------------------------------------------------------------------------------
1 9.09E-06 6.67E+00 4.71E-06 3.20E-07 10737 82 82 0 0 0.00E+00
2 9.09E-06 6.51E-05 9.51E-07 1.37E-09 10738 81 81 0 0 0.00E+00
Expert: Adjust parameters and proceed
Subcase 3 Load step: 8.0000E-01
--------------------------------------------------------------------------------
Nonlinear Error Measures Gap and Contact Element Status Maximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn
--------------------------------------------------------------------------------
1 9.70E-06 6.12E+00 7.56E-07 4.64E-08 10733 86 86 0 0 0.00E+00
2 9.70E-06 8.04E-05 1.19E-07 2.09E-11 10733 86 86 0 0 0.00E+00
Expert: Adjust parameters and proceed
Subcase 3 Load step: 8.5000E-01
--------------------------------------------------------------------------------
Nonlinear Error Measures Gap and Contact Element Status Maximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn
--------------------------------------------------------------------------------
1 1.03E-05 5.82E+00 1.21E-06 7.03E-08 10719 100 100 0 0 0.00E+00
2 1.03E-05 2.11E-04 1.44E-07 2.86E-11 10725 94 94 0 0 0.00E+00
Expert: Adjust parameters and proceed
Subcase 3 Load step: 9.0000E-01
--------------------------------------------------------------------------------
Nonlinear Error Measures Gap and Contact Element Status Maximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn
--------------------------------------------------------------------------------
1 1.09E-05 5.55E+00 1.15E-07 6.31E-09 10733 86 86 0 0 0.00E+00
2 1.09E-05 2.22E-04 3.85E-02 2.34E-05 10702 117 117 0 0 0.00E+00
3 1.09E-05 2.06E-01 7.34E-05 5.28E-08 10725 94 94 0 0 0.00E+00
4 1.09E-05 4.96E-05 8.08E-07 3.70E-10 10722 97 97 0 0 0.00E+00
Expert: Adjust parameters and proceed
Subcase 3 Load step: 9.5000E-01
--------------------------------------------------------------------------------
Nonlinear Error Measures Gap and Contact Element Status Maximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn
--------------------------------------------------------------------------------
1 1.16E-05 5.79E+00 3.26E+00 1.65E-01 10428 391 391 0 0 0.00E+00
2 1.16E-05 5.37E-03 1.05E+01 2.64E-01 10350 469 469 0 0 0.00E+00
3 1.16E-05 2.59E-03 6.66E-04 4.20E-06 10483 336 336 0 0 0.00E+00
Expert: Adjust parameters and proceed
Subcase 3 Load step: 1.0000E+00
--------------------------------------------------------------------------------
Nonlinear Error Measures Gap and Contact Element Status Maximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn
--------------------------------------------------------------------------------
1 3.89E-05 7.71E+01 2.64E+03 1.26E+03 8374 2445 2445 0 0 0.00E+00
2 6.87E-05 7.11E+01 2.81E+05 2.81E+05 6168 4651 4542 109 0 0.00E+00
3 7.87E-05 1.05E+00 2.97E+00 1.40E-01 7541 3278 957 2321 0 0.00E+00
4 7.58E-05 9.92E-02 4.32E+00 1.10E-01 7475 3344 939 2405 0 0.00E+00
5 6.70E-05 3.04E+01 3.83E+01 1.48E+00 7396 3423 1016 2407 0 0.00E+000 -
Altair Forum User said:
The last analysis is still running
************************************************************************
** **
** **
** OptiStruct 2017.1 **
** **
** Advanced Engineering Analysis, Design and **
** Optimization Software from Altair Engineering, Inc. **
** **
** **
** Windows 10 (Build 9200) DESKTOP-AERLR72 **
** 8 CPU: Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz **
** 12189 MB RAM, 21129 MB swap **
** **
** Build tag: 0862567_9433171_Ce64RBW8UH14M:128708-1 4000000014001 **
************************************************************************
** COPYRIGHT (C) 1996-2017 Altair Engineering, Inc. **
** All Rights Reserved. Copyright notice does not imply publication. **
** Contains trade secrets of Altair Engineering, Inc. **
** Decompilation or disassembly of this software strictly prohibited. **
************************************************************************
*** OptiStruct defaults set from:
install config file: C:\Program Files\Altair\2017\/hwsolvers/optistruct.cfg.
NOTE # 9199
MSGLMT=STRICT is active, all messages will be printed.
You can suppress some less important warning messages by use of
MSGLMT=BRIEF or UNREF (in config file or in the input data).2 PARAM(s) were set:
AUTOMSET,YES
EXPERTNL,CNTSTB*** WARNING # 4783
Finite sliding is ignored for contact because there is no large-displacement
analysis.*** INFORMATION # 815
The total number of rigid elements, whose rotational dependent d.o.f.
are removed because there is no need to constrain those d.o.f., is 47.*** INFORMATION # 3203
In order to produce more realistic results with nonlinear friction, gap offset
was automatically set to NO. This may cause failure of rigid body balance,
especially on models without SPC support. To activate gap offset,
set GAPOFFS to YES on the GAPPRM card.*** INFORMATION # 3433
MUMPS solver is used by default for nonlinear analysis at subcase 3.The amount of memory allocated for the run is 2461 MB.
This run will use in-core processing in the solver.
MUMPS solver will allocate memory separately and may
run in different core (in/out) mode.************************************************************************
OPTIMIZATION FILE AND PARAMETER INFORMATION :
---------------------------------------------
FEM model file :
D:/Università/PAC/Progetto motoriduttore/simulazione modello completo/mesh definitiva nuovi contatti linguetta2.fem
Output files prefix :
D:/Università/PAC/Progetto motoriduttore/simulazione modello completo/mesh definitiva nuovi contatti linguetta2
Model read from files:
D:/Università/PAC/Progetto motoriduttore/simulazione modello completo/mesh definitiva nuovi contatti linguetta2.fem
************************************************************************************************************************************************
FINITE ELEMENT MODEL DATA INFORMATION :
---------------------------------------
Total # of Grids (Structural) : 870119
Total # of Elements Excluding Contact: 734147
Total # of N2S Contact Elements : 10819 (internally created CGAPG)
Total # of Rigid Elements : 54
Total # of Rigid Element Constraints : 8520
Total # of Degrees of Freedom : 2650431
(Structural)
Total # of Non-zero Stiffness Terms : 100563930Element Type Information
------------------------
CHEXA Elements : 692019
CTETRA Elements : 35020
CPENTA Elements : 7092
CROD Elements : 16
Load and Boundary Information
-----------------------------
FORCE Sets : 1
SPC Sets : 1
Material and Property Information
---------------------------------
PSOLID Cards : 2
PROD Cards : 1
PCONT Cards : 2
MAT1 Cards : 2
************************************************************************************************************************************************
OPTIMIZATION PROBLEM PARAMETERS :
---------------------------------
NO DESIGN MATERIAL OR DESIGN VARIABLES FOUND : ANALYSIS ONLY
------------------------
Static Subcase Summary :
------------------------
---------- -------- --------
Subcase ID SPC ID FORCE ID
---------- -------- --------
3 1 2
---------- -------- --------
Run Type : Analysis Only
Run at location :/Università/PAC/Progetto motoriduttore/simulazione modello completo/
Scratch file directory :/Università/PAC/Progetto motoriduttore/simulazione modello completo/
Free space: 843.359 GB
Number of CPU processors : 1
************************************************************************************************************************************************
MEMORY ESTIMATION INFORMATION :
-------------------------------
Solver Type is: Sparse-Matrix Solver
Direct MethodCurrent Memory (RAM) : 2461 MB
(Note: MUMPS Solver Allocates Memory Separately.)
Estimated Minimum Memory (RAM) for Out of Core Solution : 11671 MB
Recommended Memory (RAM) for Out of Core Solution : 11671 MB
Recommended Memory (RAM) for In-Core Solution : 55962 MB
(Note: Memory for MUMPS Solver is Included in Estimation.)
(Note: The Minimum Memory Requirement is limited by Assembly Module.)
(Note: Use param,HASHASSM,yes to avoid assembly module memory bottleneck)DISK SPACE ESTIMATION INFORMATION :
-----------------------------------
Estimated Disk Space for Output Data Files : 228 MB
Estimated Scratch Disk Space for In-Core Solution : 1398 MB
Estimated Scratch Disk Space for Out of Core Solution : 45104 MB
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BEGINNING ANALYSIS SOLUTION ....
************************************************************************
ANALYSIS RESULTS :
------------------ITERATION 0
Element # 1156, element type PENTA.
WARNING - Outside of recommended range: Tria Vertex Angle = 10.554
lower limit = 15.000
WARNING - Outside of recommended range: Face Skew Angle = 69.419
upper limit = 60.000
WARNING - Outside of recommended range: Edge Angle = 79.444
upper limit = 75.000Element # 1157, element type PENTA.
WARNING - Outside of recommended range: Tria Vertex Angle = 10.558
lower limit = 15.000
WARNING - Outside of recommended range: Face Skew Angle = 69.414
upper limit = 60.000
WARNING - Outside of recommended range: Edge Angle = 79.442
upper limit = 75.000Element # 1158, element type PENTA.
WARNING - Outside of recommended range: Tria Vertex Angle = 10.558
lower limit = 15.000
WARNING - Outside of recommended range: Face Skew Angle = 69.414
upper limit = 60.000
WARNING - Outside of recommended range: Edge Angle = 79.440
upper limit = 75.000
NOTE : other similar error/warning messages were suppressed,
use PARAM,CHECKEL,FULL to obtain full reportElement # 699747, element type TET10.
WARNING - Outside of recommended range: Edge Angle = 75.385
upper limit = 75.000Element # 699828, element type TET10.
WARNING - Outside of recommended range: Edge Angle = 76.233
upper limit = 75.000Element # 699876, element type TET10.
WARNING - Outside of recommended range: Edge Angle = 75.622
upper limit = 75.000
Element Quality Check Summary
-----------------------------
Total # of elements that exceeded recommended range (warning) = 587
Note: Only element with the highest violation of each check is listed below.
Recommended range violations:
------------------------------------------------------------------------------
Element Property # of Recommended Range Max. Viol. Elem.
Viol. Lower Upper Value type No.
------- ------------------- -------- --------- --------- --------- --- -------
TET10 Edge Angle 5 -- 75.00 76.63 U 699881
PENTA Skew Angle 582 -- 60.00 72.47 U 328210
PENTA Edge Angle 446 -- 75.00 81.04 U 328211
PENTA TRIA Vertex Angle 446 15.00 165.00 8.96 L 328210
List of Auto-SPC d.o.f.s for loadcase 3
Total number of Auto-SPC d.o.f.s = 39099------------------------------
Grid No. Component
------------------------------
96664 4 6
96665 4 6
96666 4 6
96667 4 6
96733 4 6
96760 4 6
96787 4 6
96790 4 6
96793 4 6
96796 4 6
96979 4 6
96980 4 6
96981 4 6
96982 4 6
96983 4 6
96984 4 6
97019 4 6
97021 4 6
97023 4 6
97025 4 6
97027 4 6
97029 4 6
97031 4 6
97033 4 6
97071 4 6
97072 4 6
97073 4 6
97074 4 6
97075 4 6
97076 4 6
97077 4 6
97078 4 6
97079 4 6
97081 4 6
97082 4 6
97084 4 6
97085 4 6
97087 4 6
97088 4 6
97090 4 6
97105 4 6
97106 4 6
97131 4 6
97132 4 6
97133 4 6
97134 4 6
97135 4 6
97136 4 6
97137 4 6
97138 4 6
------------------------------Because of PARAM, PRGPST, 100, Auto-SPC printing is limited to 100 dofs.
Nonlinear iteration summary for Subcase 3
Subcase 3 Load step: 5.0000E-02
--------------------------------------------------------------------------------
Nonlinear Error Measures Gap and Contact Element Status Maximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn
--------------------------------------------------------------------------------
1 2.84E-07 9.90E+01 2.41E-01 2.41E-01 8874 1945 1945 0 0 0.00E+00
2 3.29E-07 1.04E-01 6.99E-03 5.41E-04 9601 1218 1218 0 0 0.00E+00
3 3.42E-07 2.00E-02 7.89E-03 1.82E-04 9917 902 902 0 0 0.00E+00
4 3.42E-07 4.62E-04 1.65E-04 2.06E-07 10071 748 748 0 0 0.00E+00
Expert: Adjust parameters and proceed
Subcase 3 Load step: 1.0000E-01
--------------------------------------------------------------------------------
Nonlinear Error Measures Gap and Contact Element Status Maximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn
--------------------------------------------------------------------------------
1 7.47E-07 5.36E+01 1.23E-02 6.54E-03 10204 615 615 0 0 0.00E+00
2 7.47E-07 2.69E-04 6.95E-06 1.91E-08 10277 542 542 0 0 0.00E+00
Expert: Adjust parameters and proceed
Subcase 3 Load step: 1.5000E-01
--------------------------------------------------------------------------------
Nonlinear Error Measures Gap and Contact Element Status Maximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn
--------------------------------------------------------------------------------
1 1.22E-06 3.82E+01 1.02E-02 3.79E-03 10360 459 459 0 0 0.00E+00
2 1.22E-06 2.89E-04 2.57E-07 2.70E-10 10411 408 408 0 0 0.00E+00
Expert: Adjust parameters and proceed
Subcase 3 Load step: 2.0000E-01
--------------------------------------------------------------------------------
Nonlinear Error Measures Gap and Contact Element Status Maximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn
--------------------------------------------------------------------------------
1 1.78E-06 3.03E+01 1.39E-03 3.18E-04 10457 362 362 0 0 0.00E+00
2 1.78E-06 6.52E-04 3.80E-08 5.87E-11 10483 336 336 0 0 0.00E+00
Expert: Adjust parameters and proceed
Subcase 3 Load step: 2.5000E-01
--------------------------------------------------------------------------------
Nonlinear Error Measures Gap and Contact Element Status Maximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn
--------------------------------------------------------------------------------
1 2.42E-06 2.55E+01 4.66E-04 1.08E-04 10512 307 307 0 0 0.00E+00
2 2.42E-06 1.05E-04 6.41E-06 3.06E-09 10527 292 292 0 0 0.00E+00
Expert: Adjust parameters and proceed
Subcase 3 Load step: 3.0000E-01
--------------------------------------------------------------------------------
Nonlinear Error Measures Gap and Contact Element Status Maximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn
--------------------------------------------------------------------------------
1 3.14E-06 2.18E+01 1.54E-04 2.93E-05 10554 265 265 0 0 0.00E+00
2 3.14E-06 1.73E-04 2.25E-08 4.18E-11 10568 251 251 0 0 0.00E+00
Expert: Adjust parameters and proceed
Subcase 3 Load step: 3.5000E-01
--------------------------------------------------------------------------------
Nonlinear Error Measures Gap and Contact Element Status Maximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn
--------------------------------------------------------------------------------
1 3.88E-06 1.84E+01 1.88E-05 2.91E-06 10591 228 228 0 0 0.00E+00
2 3.88E-06 1.50E-04 4.86E-09 1.15E-11 10601 218 218 0 0 0.00E+00
Expert: Adjust parameters and proceed
Subcase 3 Load step: 4.0000E-01
--------------------------------------------------------------------------------
Nonlinear Error Measures Gap and Contact Element Status Maximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn
--------------------------------------------------------------------------------
1 4.61E-06 1.53E+01 1.80E-08 2.35E-09 10624 195 195 0 0 0.00E+00
2 4.61E-06 8.29E-05 9.75E-07 1.09E-09 10625 194 194 0 0 0.00E+00
Expert: Adjust parameters and proceed
Subcase 3 Load step: 4.5000E-01
--------------------------------------------------------------------------------
Nonlinear Error Measures Gap and Contact Element Status Maximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn
--------------------------------------------------------------------------------
1 5.31E-06 1.27E+01 4.91E-05 6.34E-06 10636 183 183 0 0 0.00E+00
2 5.31E-06 4.93E-04 3.47E-07 4.43E-10 10637 182 182 0 0 0.00E+00
Expert: Adjust parameters and proceed
Subcase 3 Load step: 5.0000E-01
--------------------------------------------------------------------------------
Nonlinear Error Measures Gap and Contact Element Status Maximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn
--------------------------------------------------------------------------------
1 5.98E-06 1.09E+01 1.36E-04 1.51E-05 10644 175 175 0 0 0.00E+00
2 5.98E-06 1.91E-04 1.74E-10 8.01E-13 10644 175 175 0 0 0.00E+00
Expert: Adjust parameters and proceed
Subcase 3 Load step: 5.5000E-01
--------------------------------------------------------------------------------
Nonlinear Error Measures Gap and Contact Element Status Maximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn
--------------------------------------------------------------------------------
1 6.62E-06 9.52E+00 2.13E-08 1.72E-09 10674 145 145 0 0 0.00E+00
2 6.62E-06 4.45E-05 9.46E-10 2.12E-14 10683 136 136 0 0 0.00E+00
Expert: Adjust parameters and proceed
Subcase 3 Load step: 6.0000E-01
--------------------------------------------------------------------------------
Nonlinear Error Measures Gap and Contact Element Status Maximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn
--------------------------------------------------------------------------------
1 7.25E-06 8.52E+00 1.46E-06 1.12E-07 10699 120 120 0 0 0.00E+00
2 7.25E-06 5.72E-05 5.33E-10 3.67E-14 10706 113 113 0 0 0.00E+00
Expert: Adjust parameters and proceed
Subcase 3 Load step: 6.5000E-01
--------------------------------------------------------------------------------
Nonlinear Error Measures Gap and Contact Element Status Maximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn
--------------------------------------------------------------------------------
1 7.87E-06 7.76E+00 7.48E-07 5.43E-08 10714 105 105 0 0 0.00E+00
2 7.87E-06 6.05E-05 1.45E-10 2.80E-14 10718 101 101 0 0 0.00E+00
Expert: Adjust parameters and proceed
Subcase 3 Load step: 7.0000E-01
--------------------------------------------------------------------------------
Nonlinear Error Measures Gap and Contact Element Status Maximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn
--------------------------------------------------------------------------------
1 8.48E-06 7.14E+00 1.34E-08 9.34E-10 10728 91 91 0 0 0.00E+00
2 8.48E-06 5.72E-05 1.04E-05 2.71E-09 10730 89 89 0 0 0.00E+00
Expert: Adjust parameters and proceed
Subcase 3 Load step: 7.5000E-01
--------------------------------------------------------------------------------
Nonlinear Error Measures Gap and Contact Element Status Maximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn
--------------------------------------------------------------------------------
1 9.09E-06 6.67E+00 4.71E-06 3.20E-07 10737 82 82 0 0 0.00E+00
2 9.09E-06 6.51E-05 9.51E-07 1.37E-09 10738 81 81 0 0 0.00E+00
Expert: Adjust parameters and proceed
Subcase 3 Load step: 8.0000E-01
--------------------------------------------------------------------------------
Nonlinear Error Measures Gap and Contact Element Status Maximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn
--------------------------------------------------------------------------------
1 9.70E-06 6.12E+00 7.56E-07 4.64E-08 10733 86 86 0 0 0.00E+00
2 9.70E-06 8.04E-05 1.19E-07 2.09E-11 10733 86 86 0 0 0.00E+00
Expert: Adjust parameters and proceed
Subcase 3 Load step: 8.5000E-01
--------------------------------------------------------------------------------
Nonlinear Error Measures Gap and Contact Element Status Maximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn
--------------------------------------------------------------------------------
1 1.03E-05 5.82E+00 1.21E-06 7.03E-08 10719 100 100 0 0 0.00E+00
2 1.03E-05 2.11E-04 1.44E-07 2.86E-11 10725 94 94 0 0 0.00E+00
Expert: Adjust parameters and proceed
Subcase 3 Load step: 9.0000E-01
--------------------------------------------------------------------------------
Nonlinear Error Measures Gap and Contact Element Status Maximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn
--------------------------------------------------------------------------------
1 1.09E-05 5.55E+00 1.15E-07 6.31E-09 10733 86 86 0 0 0.00E+00
2 1.09E-05 2.22E-04 3.85E-02 2.34E-05 10702 117 117 0 0 0.00E+00
3 1.09E-05 2.06E-01 7.34E-05 5.28E-08 10725 94 94 0 0 0.00E+00
4 1.09E-05 4.96E-05 8.08E-07 3.70E-10 10722 97 97 0 0 0.00E+00
Expert: Adjust parameters and proceed
Subcase 3 Load step: 9.5000E-01
--------------------------------------------------------------------------------
Nonlinear Error Measures Gap and Contact Element Status Maximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn
--------------------------------------------------------------------------------
1 1.16E-05 5.79E+00 3.26E+00 1.65E-01 10428 391 391 0 0 0.00E+00
2 1.16E-05 5.37E-03 1.05E+01 2.64E-01 10350 469 469 0 0 0.00E+00
3 1.16E-05 2.59E-03 6.66E-04 4.20E-06 10483 336 336 0 0 0.00E+00
Expert: Adjust parameters and proceed
Subcase 3 Load step: 1.0000E+00
--------------------------------------------------------------------------------
Nonlinear Error Measures Gap and Contact Element Status Maximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn
--------------------------------------------------------------------------------
1 3.89E-05 7.71E+01 2.64E+03 1.26E+03 8374 2445 2445 0 0 0.00E+00
2 6.87E-05 7.11E+01 2.81E+05 2.81E+05 6168 4651 4542 109 0 0.00E+00
3 7.87E-05 1.05E+00 2.97E+00 1.40E-01 7541 3278 957 2321 0 0.00E+00
4 7.58E-05 9.92E-02 4.32E+00 1.10E-01 7475 3344 939 2405 0 0.00E+00
5 6.70E-05 3.04E+01 3.83E+01 1.48E+00 7396 3423 1016 2407 0 0.00E+000 -
HI,
Did the simulation came out with any errors or is it successful?
0 -
it's succesfull
0
