Strain-based element failure
Altair EmployeeHello,
I am trying to assign a failure criteria based on strain. For example, I want to be able to remove or replace the material properties of elements that reach 0.9% strain, or do the same thing when the principal strain of an element exceeds 10000 microstrain (these figures are from literature).
The MATF card only takes stresses. How can I implement these strain-based criteria?
Thanks.
Answers
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MATF bulk data card supports multiple failure criteria
- PUCK, HILL, HOFFMAN, TSAI-Wu, HASHIN, or Max Strain
Right now we can only calculate Composite Failure with Shell-elements and MAT1/MAT8 Materials.
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Hi Rahul,
I see the 'STRN' option in MATF, but the bulk data description does not explain how to add strain criteria.
What would be your suggestion to implement this?
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Please refer attached document on Laminate Failure Theories in OptiStruct.
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do you get your answer?
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