Learning Forum

[Seongbin Moon]

Hi guys,
I'm modeling the stacked electrical steel lamination core of motor rotor as a single homogeneous solid (not modeling individual layers). The in-plane direction behave like conventional isotropic steel and deosn't have any problem. 
However, the axial (stacking) direction, shows highly nonlinear stress-strain behavior from strat of loading, not due to conventional curve. I mean low Young's modulus during low strain and increase progressively. (refer attached image of curve)

• What I want to do and trying to do

I want to define a material model like below:
1. The elastic behavior is orthotropic (different E, v in x,y,z direction)
2. The axial (z) direction specifically follows a direction-specific, nonlinear elastic stress-strain curve 
3. The in-plane (x,y) directions remain simple linear elastic

• Questions

1.Is there a supported way in Ansys Workbench to combine this orthotropic Elasticity with a Multilinear elastic curve applied to only one direction, while keep other two directions same?

2.If not natively supported in Ansys, has anyone here modeled this kind of direction-specific nonlinear elastic behavior through some other method or workaround?

Any similar experience would be appreciate!