Modify car crash error.
Altair EmployeeI want to analyze car crash simulaltion.
A crash test was performed using a CFRP laminated front bumper.(The bumper is made from hypermesh)
However, an error occurred and the Radioss run did not proceed.
Please remove the error and let it be simulated.
(Test5 file is radioss files)
Answers
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Hi Domado,
Please update the laminate1_1 property with P9_SH_ORTH property and try running. Update with appropriate thickness.
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Thanks Goerge
Can I get a engine file?
Model.zip has a start file only.0 -
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Thank George,
I changed the bumper in your model to another bumper.(in hypercrash) However, an error occurred when I run Radioss. Please correct the error.
the error message is
ERROR ID : 553
** ERROR IN TH GROUP DEFINITION
.. GEOMETRY PLOT FILE
.. ERROR ==> NO RESTART FILE
ERROR TERMINATION
------------------
1 ERROR(S)
297 WARNING(S)
PLEASE CHECK LISTING FILE FOR FURTHER DETAILSAttach New bumper rad.
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Hi Domado,
There are no errors reported in this model (bumper_0000.rad). If you find any errors please upload the starter out (_0000.out) file also with the same.
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Thank George.
I merge that bumper file in your Model file.
Attach file
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Hi George,
I run your modified model, but this file has some errors.
Please modifiy this errors
Attach file
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Hi George,
I run your first modified model, but this file has some errors.
Please modifiy this errors
Attach file
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Hi Domado,
NEGATIVE VOLUME or ZERO VOLUME is terminating the run. This error happens when solid elements are very deformed and their characteristic length goes to 0. For large strain formulation the time step of an element goes to 0 when the element is compressed. In RADIOSS Starter input file (Runname_0000.rad), use Ismstr =2 in the solid property and when using this formulation, set Isolid =14 and try running the simulation.
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Thanks George.
How to use Ismstr =2 in the solid property and set Isolid =14 ?
Please show me how to use and set.
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Hi Domado,
Click on the solid properties in the model browser and edit Ismstr and Isolid in the entity editor. Please see the attached image.
<?xml version="1.0" encoding="UTF-8"?>
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Thanks George
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MESSAGE ID : 205
** RUN KILLED : ENERGY ERROR LIMIT REACHED
MESSAGE ID : 207
** RUN KILLED : TOTAL MASS ERROR LIMIT REACHED
NC= 2745 T= 2.2238E-03 DT= 2.9651E-09 ERR= 99.9% DM/M= 2.1967E+22
ELAPSED TIME= 537.91 s REMAINING TIME= 18812.98 s
ANIMATION FILE: NEON_OP3_new_merge_newmatA002 WRITTENThis message appears. Should I change the values of all properties?
And this file increases kinetic energy.
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Hi Domado,
I have uploaded the modified files to the other post you have created. http://forum.altairhyperworks.com/index.php?/topic/18481-how-can-i-continue-to-run-this-model/
Please run with those files and update.
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Thanks Georage.
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