Inquiry Regarding Your Article about UMAT4COMSOL

[JermtSmith]

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?