Help Modelling Material in Abaqus

Hello All

I need to model a material in Abaqus that when I load the piece, the
material behaves with an Elastic modulus and when I unload the piece the
material behaves with a different Elastic modulus but don't recover all
the strain when the stress is released.

Enclosed you can find the behavior that I want to model.

Any ideas??

Thanks in advance.

David