Nonlinear material in ABAQUS

[Rain4127]

Hey guys,
I have been struggling with this problem for one week.Wish someone could help me to get over it. Thanks in advance!

I want to make solid element have nonlinear property. For example, the solid element has Elastic Modulus E1 during displacement interval 1, and it has another Elastic Modulus E2 during next displacement interval 2.

Does anyone know how to carry it out in Abaqus? Thanks a lot!

 

[rstupplebeen]

Try hyperlastic with test data.

Rob Stupplebeen

https://sites.google.com/site/robertkstupplebeen/

 

[Rain4127]

Hi,rstupplebeen!
Thanks for the help!

But the hyperelastic material is uncompressible.Now I'm simulating the soil behaviour.

If someone could help, maybe just some hints, I will be very grateful.

 

[DanStro]

Couldn't this be done using the UMAT subroutine? It might be like swatting at a fly with a bazooka but it looks like it should be possible.

 

[rstupplebeen]

You might want to check "21.5.2 Hyperelastic behavior in elastomeric foams" I hope this helps.

Rob Stupplebeen

https://sites.google.com/site/robertkstupplebeen/