Free Shape Optimization, Bolt Pretension fails with latest hotfix
Altair EmployeeHello,
we've got a model with 3d bolt-pretension, friction-contact, a non-linear quasi static analysis type and 2 loadsteps.
In our topology optimization and the static anlysis the model worked well, but it's not running in a free shape optimization.
There was a problem with the solver, which was corrected with the hwsolvers13.0.212_hotfix. But even now the solver can't solve the iteration 0 and stops with an error.
We're using Hyperworks-Version V13.0.
The out-file contains:
************************************************************************
** **
** **
** OptiStruct 13.0.212 **
** **
** Design and Optimization Software **
** from Altair Engineering, Inc. **
** **
** **
** Windows 7 Workstation SP1 (Build 7601) BTA6K35 **
** 12 CPU: Intel® Xeon® CPU E5-1650 0 @ 3.20GHz **
** CPU speed 3200 MHz **
** 56923 MB RAM, 130904 MB swap **
** **
** Build tag: 0760788_5533130_Ce64RBW8UH12M:99179-000 4000020004000 **
************************************************************************
** COPYRIGHT © 1996-2015 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\13.0\/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).
*** INFORMATION # 3071
SPOINT # 138743 is automatically generated for PRETENS # 2.
*** INFORMATION # 3071
SPOINT # 138744 is automatically generated for PRETENS # 3.
NOTE # 1852
AUTOMATIC SCREENING is activated.
Use DSCREEN,AUTO,OFF to disable automatic screening.
*** 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.
WARNING:
The amount of memory allocated for the run is 1348 MB, which
is larger than the specified (or the default) RAM= 1000 MB.
This run will use minimum core processing in the solver.
************************************************************************
OPTIMIZATION FILE AND PARAMETER INFORMATION :
---------------------------------------------
FEM model file :
/Benutzer/s6anrode/Desktop/Geometrie_Shapeopti/Test_mit_Bauraum_shapeopti3.fem
Output files prefix :
************************************************************************
************************************************************************
FINITE ELEMENT MODEL DATA INFORMATION :
---------------------------------------
Total # of Grids (Structural) : 136860
Total # of Elements Excluding Contact: 654246
Total # of N2S Contact Elements : 1036 (internally created CGAPG)
Total # of Degrees of Freedom : 414689
Total # of Non-zero Stiffness Terms : 1244067
Total # of Pretension sections : 2
Element Type Information
------------------------
CTETRA Elements : 654246
Load and Boundary Information
-----------------------------
FORCE Sets : 8
SPC Sets : 1
MPC Sets : 3
Material and Property Information
---------------------------------
PSOLID Cards : 3
MAT1 Cards : 2
************************************************************************
************************************************************************
OPTIMIZATION PROBLEM PARAMETERS :
---------------------------------
Objective Function : Min(Max) Multiobjective
------------------
Response Summary :
------------------
Number of stress responses : 1275634
------------------------
Static Subcase Summary :
------------------------
---------- -------- --------
Subcase ID SPC ID FORCE ID
---------- -------- --------
1 2 3
2 2 4
---------- -------- --------
---------------------------
Design Parameters Summary :
---------------------------
Total # of free-shape cards : 1
---------------------------------
Optimization Parameters Summary :
---------------------------------
Maximum Number of Iterations : 30
Convergence Tolerance : 5.0000E-03
Step Size (Shape) : 0.2000
Run Type : Free-Shape Optimization
Restart from previous solution : No
Scratch file directory : ./
Free space: 1769.690 GB
Number of CPU processors : 2
************************************************************************
************************************************************************
MEMORY ESTIMATION INFORMATION :
-------------------------------
Solver Type is: Sparse-Matrix Solver
Direct Method
Current Memory (RAM) : 1348 MB
Estimated Minimum Memory (RAM) for Minimum Core Solution: 1256 MB
Recommended Memory (RAM) for Minimum Core Solution : 1348 MB
Estimated Minimum Memory (RAM) for Out of Core Solution : 1344 MB
Recommended Memory (RAM) for Out of Core Solution : 1458 MB
Recommended Memory (RAM) for In-Core Solution : 1551 MB
(Note: Minimum Core Solution Process is Activated.)
DISK SPACE ESTIMATION INFORMATION :
-----------------------------------
Estimated Disk Space for Output Data Files : 638 MB
Estimated Scratch Disk Space for In-Core Solution : 827 MB
Estimated Scratch Disk Space for Out of Core Solution : 827 MB
Estimated Scratch Disk Space for Minimum Core Solution : 937 MB
************************************************************************
BEGINNING OPTIMIZATION SOLUTION ....
************************************************************************
OPTIMIZATION HISTORY INFORMATION :
----------------------------------
ITERATION 0
Element # 686814, element type TETRA.
WARNING - Outside of recommended range: Edge Angle = 77.153
upper limit = 75.000
Element # 713113, element type TETRA.
WARNING - Outside of recommended range: Face Vertex Angle = 14.154
lower limit = 15.000
WARNING - Outside of recommended range: Edge Angle = 75.230
upper limit = 75.000
Element # 713116, element type TETRA.
WARNING - Outside of recommended range: Face Vertex Angle = 13.101
lower limit = 15.000
Element # 713177, element type TETRA.
WARNING - Outside of recommended range: Face Vertex Angle = 14.154
lower limit = 15.000
NOTE : other similar error/warning messages were suppressed,
use PARAM,CHECKEL,FULL to obtain full report
Element # 713330, element type TETRA.
WARNING - Outside of recommended range: Edge Angle = 75.784
upper limit = 75.000
Element # 801906, element type TETRA.
WARNING - Outside of recommended range: Face Skew Angle = 76.331
upper limit = 75.000
Element # 801914, element type TETRA.
WARNING - Outside of recommended range: Face Skew Angle = 77.141
upper limit = 75.000
Element # 802365, element type TETRA.
WARNING - Outside of recommended range: Face Skew Angle = 76.331
upper limit = 75.000
Element Quality Check Summary
-----------------------------
Total # of elements that exceeded recommended range (warning) = 113
Recommended range violations:
------------------------------------------------------------------------------
Element Property # of Recommended Range Max. Viol. Elem.
Viol. Lower Upper Value type No.
------- ------------------- -------- --------- --------- --------- --- -------
TETRA Face Skew Angle 4 -- 75.00 77.14 U 803873
TETRA Edge Angle 88 -- 75.00 80.69 U 803029
TETRA Face Vertex Angle 110 15.00 165.00 9.27 L 713688
NOTE # 1405
Memory is being expanded from 1348 MB to 1483 MB.
Estimated working storage was not enough for inserting the data block
'ipress' (1 MB + 1 MB)
In order that we may improve our memory estimates, it would be appreciated if
you could email this information and your run command to hwsupport@altair.com.
If it is possible, please also include input data file(s).
Auto-SPC d. o. f.s for loadcase 1
Number of Auto-SPC d. o. f.s = 2955
------------------------------
Grid No. Component
------------------------------
44040 4 5 6
44041 4 5 6
44042 4 5 6
44043 4 5 6
44044 4 5 6
44045 4 5 6
44046 4 5 6
44047 4 5 6
44048 4 5 6
44049 4 5 6
44050 4 5 6
44051 4 5 6
44052 4 5 6
44053 4 5 6
44054 4 5 6
44055 4 5 6
44056 4 5 6
44057 4 5 6
44058 4 5 6
44059 4 5 6
44060 4 5 6
44061 4 5 6
44062 4 5 6
44063 4 5 6
44064 4 5 6
44065 4 5 6
44066 4 5 6
44067 4 5 6
44068 4 5 6
44069 4 5 6
44070 4 5 6
44071 4 5 6
44072 4 5 6
44073 4 5 6
------------------------------
Because of PARAM, PRGPST, 100, Auto-SPC printing is limited to 100 dofs.
Nonlinear iteration summary for Subcase 1
Subcase 1 Load step: 1.0000
--------------------------------------------------------------------------------
Nonlinear Error Measures Gap and Contact Element Status Maximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn
--------------------------------------------------------------------------------
*** ERROR # 193 ***
Possible programming Error :
Unexpected error condition from subroutine xdslv1.
ioerr(1) = -402
ioerr(2) = 414882
ioerr(3) = 401518
*** INTERNAL PROGRAMMING ERROR ***
in file 'KL2hold.F', at location # 184.
ioerr(1) = 150
ioerr(2) = 0
**** ABORTING RUN DUE TO AN INTERNAL ERROR ****
************************************************************************
OptiStruct error termination report printed to file
'Test_mit_Bauraum_shapeopti3.stat'.
NOTE # 1422
There were 1 automatic memory expansion(s).
(The result is not affected by this.)
************************************************************************
There were 9 WARNING(s) reported during the run.
************************************************************************
==== End of solver screen output ====
==== Job completed ====
Thank you for your help!
Answers
-
Hi s6thpost,
This is a known programming issue.
I am able to run the model with similar error using 13.0 210 solver update.
would it be possible to try on 13.0.210 instead of 13.0.212?
0 -
Hi,
thanks for the advice with the older version. The solver can be chosen in the run options field by writing -v 13.0.210.
With this solver version we had no error, the model worked well.
Thanks for your help!
0 -
0
-
Hi Prakash
I am facing below error while running bolt pretension non linear analysis
I tried already PARAM->EXPERTNL->CNTSTB
But Still Not running
Can you please suggest me in this issue ?
Nonlinear Error Measures Gap and Contact Element Status Maximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip Frozen Plststrn
--------------------------------------------------------------------------------
1 4.75E-06 9.90E+01 1.75E+04 1.75E+04 195 214 214 0 731 1.30E-03
2 2.46E-06 8.18E+00 9.62E-02 1.07E-01 231 178 178 0 731 1.30E-03
3 2.46E-06 5.02E+00 6.35E-03 4.37E-03 243 166 166 0 731 6.16E-04
4 2.56E-06 5.03E+01 3.32E-04 2.32E-04 244 165 165 0 731 6.38E-04
5 2.56E-06 3.24E-04 2.47E-07 2.28E-10 244 165 165 0 731 6.39E-04
*** Nonlinear solution has converged ***
(Scratch disk space usage for starting iteration = 121 MB)
(Running in-core solution)Volume = 2.38452E+005 Mass = 1.56844E-003
Subcase Compliance Epsilon
1 2.475932E+02 3.441759E-08Note : Epsilon = Residual Strain Energy Ratio.
0 -
Hi @Venki
Can you check if there are any modeling errors in your model?
also, check if there is penetration in the model.
0