Need user material Fortran code for viscoelastic

Submitted by tomas on Tue, 2010-07-13 16:27.

Where I can find the subroutine of a user material Fortran code for Viscoelastic constitutive model?

Does anyone has the subroutine for LS-DYNA ?

Can anyone help me?

Submitted by Frank Richter on Wed, 2010-07-14 10:04.

You can find one in my PhD thesis

Richter, Frank
Upsetting and Viscoelasticity of Vitreous SiO2: Experiments, Interpretation and Simulation

Good luck !

Frank

------------------------------------------
Ruhr-University
Bochum
Germany

Submitted by ebarbero on Sat, 2010-07-17 14:57.

Also, there is a trivial simple example in the Viscoelasticity chapter of http://www.amazon.com/exec/obidos/ASIN/1420054333/booksoncomposite

Submitted by tomas on Wed, 2010-07-21 07:05.

Hi, Richter,

So kind you are, and I really appreciate you very much.

But currently I use the program LS-DYNA, not ABAQUS.

Does anyone has the subroutine for LS-DYNA ?

Thanks.

iMechanica