Hello,
I am using the JH-2 model, which is a VUMAT constitutive model embedded in the Abaqus/explicit program. I would like to directly check how this VUMAT file is written, and if possible, I would like to modify it. Could you please tell me where I can find this VUMAT file?
Thank you.
In Kng,
The built-in JH2 VUMAT is not accessible.
But you can get the JH2 model implemented in VUMAT which is something like that from here.
https://en.banumusagr.com/shop/vumat-jhb-jh2-abaqus-builtin/
Good luck
The VUMAT file is a user-defined material subroutine in Abaqus/explicit, which allows you to implement your own constitutive models. The VUMAT file contains the material behavior equations and calculations specific to your chosen constitutive model.
To locate the VUMAT file and make modifications, you will need access to the source code of the user-defined material subroutine. Here's how you can find it:
Once you have located the VUMAT file, you can open it using a text editor or an Integrated Development Environment (IDE) that supports Fortran code. Review the code to understand the constitutive model implementation and make any necessary modifications.
Please note that modifying a VUMAT file requires knowledge of Fortran programming and a deep understanding of the constitutive model you are working with. Make sure you are familiar with the theory and equations behind the model before attempting any modifications. Additionally, it is always recommended to create backups and test any changes thoroughly to ensure the accuracy and stability of your simulations.