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Need material parameters that produce an S-SHAPED stress-strain curve

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Posts: 55
Topic starter
(@james.lockley)
Trusted Member
Joined: 8 years ago

Hello,

Does anyone have material parameters (based on any of the common material models) or experimental data for a material that shows a couple of dramatic changes in tangent? Anything Ive tried based on what I found in the literature doesnt give me that shape. I had a set of experimental data that I tried in ABAQUS but it didnt give me a stable material. I need it for a simple simulation in ABAQUS. Thank you very much!

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Posts: 3998
(@jorgen)
Member
Joined: 5 years ago

You may want to try an isotropic hardening metal plasticity model, or the Yeoh hyperelastic model.

-Jorgen

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Posts: 55
Topic starter
(@james.lockley)
Trusted Member
Joined: 8 years ago

Hi Dr. Bergstrom, thanks!

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