Modeling & Meshing

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  3. Why don’t SHELL181 mid-surface results reflect plastic stress-strain curve? Due to transverse shear the mid-surface equivalent stress is higher than the top or bottom surface and the value being reported is far beyond the yield stress.

Why don’t SHELL181 mid-surface results reflect plastic stress-strain curve? Due to transverse shear the mid-surface equivalent stress is higher than the top or bottom surface and the value being reported is far beyond the yield stress.

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    • March 17, 2023 at 9:00 am
      FAQFAQ
      Participant

      Development explained that SHELL181 treats the transverse shear linearly. Plasticity is not considered. If transverse shear needs to be modeled with plasticity a 3d element is required. Possibly a 3d submodel could be used. It is somewhat rare in thin shells for the transverse shear to be the dominant stress.

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