VUMAT EXAMPLES for Hyperelastic materials

[willsen]

Hello,

I am new with VUMAT. Recently I have finished reading VUMAT example for Neo-Hookean material from the "Mechanics of Solid Polymers" textbook. Could anyone share more VUMAT examples of Hyperelastic materials for learning purposes? Thank you very much.

Regards,

Willsen

[twhohen]

Hello,

I have written a hyperelastic VUMAT that can handle strain-energy functions of the form:

W = K1(I1-3)^m + K2(I1-3)^p + K3(I1-3)^q

which covers the Neo-Hookean, Yeoh, and (almost) Davies-De-Thomas (1994) models. I think it will be published in an appendix of a related work soon. If you want to take a look before then, let me know and I may be allowed to share it with you before it hits the press.

Regards,
Travis

[twhohen]

I forgot to add the compressibility term which is required for VUMAT. The form is:

W = K1(I1-3)^m + K2(I1-3)^p + K3(I1-3)^q + 1/D1(J-1)^2

[willsen]

Hi,

Thank you very much for your kind offer. I am quite confident with VUMAT now so all good!
Congratulation with your publication!

Regards,

Willsen