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Material model for PP in ANSYS APDL

Material model for PP in ANSYS APDL

Material model for PP in ANSYS APDL

(OP)
Hello everybody,

First of all be patient if what i ask its very basic, Im a begginer with ANSYS,so im having troubles to define the material model for the polymers PP and EPS. I wonder if anybody here can help me... Im using the properties from the matweb website but no idea what type of material model i should use in each case.

The model its a child seat for cars. And in the analysis im doing with 25g aceleration i think i will be over the yield stress so i cant apply a linear model. So im using the non lineal isotropic hardening for both materials. But i dont feel like its correct to do that. I research like some ppl used that material model with EPS but i have no idea about PP.

What do you think? Thanks!

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