converting umat into vumat

[masood4626]

Hello

I want to model granular material under cyclic loading and I want to use vumat in abaqus explicit. I have download a umat from

http://www.soilmodels.info

and I want to convert it to vumat. can any one help me. because I do not have enough expertise to do this work.

I have attached the umat file and the paper that explains the granular material costitutive behavior.

 

[masood4626]

paper file

 

[HyHy]

Dear Masood4626
Can you help to define the earthquake loading in Abaqus software?