How to set up a composite analysis
Altair EmployeeHello,
to set up a composite analysis for OptiStruct, you might follow the following the steps within these tutorials:
There are more Tutorials available in the HyperWorks Help -> Tutorials -> Solver Tutorials -> OptiStruct
Please note that in order to write stress and failure data (e.G. Tsai-Wu) from an OptiStruct Composite Analysis, you need to activate the following solver input:
- The material (MAT 8 for shells) needs a statemend on the allowable Yield Limits for stress or strain
- The Property (Pcomp) or the Plies (in case of ply based modelling approach) need a statement for stress output --> SOUT = YES
- The Composite Stress and Strain output finally needs to be activated in the subcase options or globally for all subcases by using setup --> create --> control cards --> global output options --> CSTRESS and CSTRAIN
Please let us know, if you need further advice
Jan
Answers
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Hi,
I used to be able to set up a composite analysis in HyperMesh 12, but in HyperMesh 13 I can't retrieve the failure index results.
I followed everything in the 'OS-4050: Optimization of a Horizontal Tail Plane' tutorial, but no matter whether I use HILL or TSAI (actually I would like to use TSAI) failure criteria, after the run is completed, in there is no 'Ply Failure' result in HyperView.
I attached the file. Please rename the extension from *.txt to *.hm.
Thank you
Aecyd
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Hi,
What are the updates installed for HyperWorks on your machine?
You can find the software updates and graphics information from HyperMesh>> Help>> Updates and system information
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I've just updated to 13.0.211.
However, after you asked the version I tried it with the 13.0.98 version, and it works.
That seems to be a serious bug in the new version
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Hi Aecyd,
Add this line to solver deck through Unsupported_CARDS or you can edit the solver deck.
CFAILURE(H3D,NDIV=1) = YES
Manual edit:
if you have requested CSTRESS for example, open the solver deck with a text editor and copy CSTRESS to another line. Now replace the CSTRESS (new line) with CFAILURE.
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