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Modeling spongy materials

Modeling spongy materials

Modeling spongy materials

(OP)
I need to model a spongy material for which I am only interested in its performance (stiffness) in the Z direction. My scope does not need me to see the stresses/strains in the spongy material.

Following is what I have (if Z is my vertical):
1) Cross sectional area (X-Y plane) of this material.
2) "Ideally" if 'X' load is applied on this entire cross section area, the deflection 'd' this material will experoence in Z direction. In actual model, the force will not act on this entire area. There will be some contact non-linearities but I will get to that later.

Can somebody give me an idea how I Can model this spongy material?

Thanks in advance.

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