UMAT For Progressive Damage

[MCLJake]

Hello all,

I am working on developing an ABAQUS material subroutine to model progressive damage in the composite layers of hybrid composite-metal laminates.

I've read the UMAT sections of the manual and the "Exemplar UMAT and VUMAT Subroutines for ABAQUS" section (both of which were very helpful :D), but I was wondering if anyone knows of any additional resources.

Thanks in advance,

Jake

[Jorgen]

Interesting project. I would guess that your task contains two parts: (1) developing the constitutive equations for the composite; and (2) implementing the equations into a UMAT/VUMAT.

As you know there are numerous references that discuss damage evolution in composites. There are very few references, however, that discuss UMAT/VUMAT development, and you have already found the required sources. I know of no other good general purpose resources.

I have written both UMATs and VUMATs that incorporate progressive damage evolution, and these types of models are not more difficult to implement than any other non-linear model :wink:

- Jorgen

[ashu28]

U might find this book helpful:

Introduction to Computational Plasticity
Fionn Dunne and Nik Petrinic

This is one of the rare resources I have come across that deals with UMAT coding.


Ashu

[hhspiny]

U might find this book helpful:

Introduction to Computational Plasticity
Fionn Dunne and Nik Petrinic

This is one of the rare resources I have come across that deals with UMAT coding.


Ashu

the code of the book can be freely downloaded from website. but still there are very basic codes, not significantly more useful than the example included in Abaqus.