Learning Forum

[1617836513]

How do you enter material parameters for an elastic phase, i.e., a material with a very inconspicuous linear portion and a variation in Young's modulus?

[Sai Deogekar]

Hello,

What is the objective of your simulation? The reason I ask is to guage how important that variation of Young's modulus in the elastic part of the stress-strain curve is. For linear elasticity, you can input only a single Young's modulus and Poisson's ratio. Is it possible to approximate that part with a single Young's modulus? For the plastic portion, generally you would enter the yield stress and a hardening law.

[1617836513]

Hi, the picture shows a magnesium alloy material, which I would like to use to make a bone nail, after which it will be tested for torsion and pullout strength in bone.

[1617836513]

Also if I'm using a multilinear Isotropic hardening model, is the hardening law you're talking about equivalent to the table of input plastic strains and stresses in Figure 2?