Writing UMAT subroutine

Hello,

If you have just started to write the UMAT subroutine, I recommend reading the articles which I share their links below:

https://caeassistant.com/blog/start-writing-your-1st-umat-in-abaqus-foundation/

https://caeassistant.com/blog/start-writing-your-1st-umat-for-abaqus-construction/

also, watch this demo: https://www.youtube.com/watch?v=96sfwnvLHkA

This package contains tutorial videos for the UMAT subroutine, required files for the modeling and writing of the subroutine, examples of isotropic materials and shell elements, etc.

And if your model is orthotropic, and shell element or continuum shell or anything than 3D continuum solid, check the link below:

https://caeassistant.com/product/damage-analysis-in-macro-modeling-of-composite-materials-in-abaqus/

for 3D continuum solid element and fatigue analysis, check the following links:

https://caeassistant.com/product/3d-continuum-hashin-progressive-damage-for-composite-materials-in-abaqus-vumat-subroutine/

https://caeassistant.com/product/composite-fatigue-simulation-with-subroutine/

Best regards.