At any given iteration, the "incremental" equivalent plastic strain is used to verify the strain limit. However, NLEPEQ or EPPLEQV_RST (Ansys Workbench) are nodal and elemental accumulated plastic strains. Is it appropriate to use NLEPEQ or EPPLEQV at non-averaged nodal integration points?
Thank you.
RE: Incremental Plastic Strains, ASME Local Failure Assessment
First understand the failure mode and then you can understand which quantity is appropriate for checking criteria. Equivalent plastic strain at nodes or at integration points is sufficient.
RE: Incremental Plastic Strains, ASME Local Failure Assessment
Thank you Nikhil, the LinkedIn post was lucidly written. While I can understand the theory behind mechanism of the local collapse, the implementation in the code and PTB-1 is rather ambiguous. I have ordered TGS4s papers and hopefully the implementation will be clearer.
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RE: Incremental Plastic Strains, ASME Local Failure Assessment
First understand the failure mode and then you can understand which quantity is appropriate for checking criteria. Equivalent plastic strain at nodes or at integration points is sufficient.
RE: Incremental Plastic Strains, ASME Local Failure Assessment