In MFC project, consider an elastoplastic model rather than just an elastic model.

[biterliu]

Would it be feasible to incorporate plasticity effects—such as those described by the Wilkins model—into the hypoelastic framework, or alternatively, to develop a hyperelastic model capable of capturing elastoplastic deformation? I am actively considering such extensions.

[sbryngelson]

It could be. @mrodrig6 and his group implemented the hyper/hypoelastic models. They would know best. If you have a specific question on the numerics or equations, I'm glad to help further.