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  3. Why does a hyperelastic model converge with a 3-D representation, but always fails in 2-D with an element formulation error?

Why does a hyperelastic model converge with a 3-D representation, but always fails in 2-D with an element formulation error?

Tagged: 17, hyperelasticity, Maerials, materials, mechanical-apdl, Nonlinear mechanics, structural-mechanics
    • March 17, 2023 at 9:00 am
      FAQFAQ
      Participant

      Assuming the mesh, loads and BCs are correctly defined, it is possible that the 2-D plane stress or plane strain assumption is invalid for the application, creating an overconstrained condition. This can be the case if it has a finite depth, is under a large compressive load and is a highly compressible foam material.

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