Thanks

Andreas Burger — Sat, 26 Jul 2008 21:29:52 -0400

thanks for the link Aaron

Andreas

ABAQUS viscoelasticity

Aaron Goh — Wed, 23 Jul 2008 11:09:00 -0400

Andreas,

This has been discussed before:check out this thread:

http://imechanica.org/node/1784

ABAQUS does have a user-friendly way of modelling non-linear viscoelasticity.

Hi Andreas

Mike Graham — Tue, 15 Jul 2008 16:19:58 -0400

I've never used the built-in visco-elastic model in Abaqus, so I cannot be much of a help. I looked up that portion of the manual, but obviously I don't see anything you do not.

I think what you need to do really is to divide by the initial values. That gives you normalized values, but scaling them so that a certain value (in this case, the initial value) is 1. This sort of normalization is employed in many engineering problems.

Abaqus does not have built-in, nonlinear viscoelastic models (to the best of my knowledge). To perform a simulation with nonlinear viscoelasticity, you would need to use a UMAT user subroutine to define the material behaviour for Abaqus.

Good luck!

iMechanica - relaxation - Comments

Thanks

ABAQUS viscoelasticity

Hi Andreas