sergiolucarini / umat4comsol

UMAT4COMSOL: An Abaqus user material (UMAT) subroutine wrapper for COMSOL

Disclaimer

This repository is distributed under an MIT license. In layman's term, you are free to do what you want with it. We just kindly request you to cite our papers that form the basis for this repository, and encourage you to be equally open with your code.

(c) Sergio Lucarini 2024

UMAT4COMSOL

UMAT4COMSOL: An Abaqus user material (UMAT) subroutine wrapper for COMSOL

Reference

S. Lucarini, E. Martinez-Paneda. UMAT4COMSOL: An Abaqus user material (UMAT) subroutine wrapper for COMSOL. Advances in Engineering Software, 2024.

Descrition

UMAT4COMSOL is a C code developed by Sergio Lucarini that serves as an external material to be used in Comsol which calls an abaqus umat to compute mechanical constitutive equations.

Allows using abaqus umats in comsol easily

Crystal Plasticity umat Polycrystal in Comsol

Hydrogen coupled (for Hydrogen Embrittlement) Crystal Plasticity in Comsol

umat4comsol's Issues

Inquiry Regarding Your Article about UMAT4COMSOL

You mentioned that the deformation of the solid affects hydrogen transport. I am interested in further considering how hydrogen transport might, in turn, affect the deformation of the solid, such as impacting the Jacobian matrix. Could you please advise on how to set up the input and output of the external material to account for this bidirectional coupling? Specifically, how can I modify the external material so that the hydrogen concentration can be both imported and exported, thereby achieving a two-way coupling between the solid mechanics and the dilute material transport interfaces?