Properties extracted from stress strain curve in explicit dynamics
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Hello,
Good day to you.
I am modelling compression test of porous structure in explicit dynamic. I am importing data as a stress strain curve in the material properties. Can you please tell me how will I calculate the mechanical properties from the curve in workbench.
Can you please tell me which plasticity model will be used for the non-linear plasitc behaviour of a polymer?
For porous materials, you can consider using the material models under Porosity in Engineering Data.
These models are Crushable Foam, Compaction EOS Linear, Compaction EOS Non-Linear, and P-Alpha EOS.
ANSYS Explicit Materials library has a sample material property data set of Compaction EOS Linear for concrete materials. See the picture attached below.
Material models for plasticity can be found under Plasticity in Engineering Data. The simplest form is the Bilinear Isotropic/Kinematic Hardening. The mostly-used form is Multilinear Isotropic/Kinematic Hardening. The advanced form is Johnson Cook, Cowper Symonds, Steinberg Guinan, and Zerilli Armstrong models that can also account for strain rate hardening and thermal softening.
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