Query for Viscoelastic Models for Polymeric foams

[jameel ahmed]

Hello,

I want to determine the viscoelastic properties of a polymeric foam, such as storage and loss modulus. Could you please suggest to me which of the following models can be helpful?

*MAT_VISCOELASTIC (*MAT_6)

*MAT_GENERAL_VISCOELASTIC (*MAT_76) 
 - Can be used for rate-dependent, rubber-like materials (Feng)

*MAT_SOFT_TISSUE_VISCO (*MAT_91)
 - Ligaments, tendons, fascia
 - Mooney-Rivlin matrix reinforced by fibers

*MAT_QUASILINEAR_VISCOELASTIC (*MAT_176)
 - Biological soft tissues such as brain, skin, kidney, spleen, etc. (Feng)

*MAT_VISCOELASTIC_HILL_FOAM (*MAT_178)
 - Highly compressible, rubber-like materials (Feng, Hallquist)

*MAT_RATE_SENSITIVE_COMPOSITE_FABRIC (*MAT_158)

Thanks. 

[James Kennedy]

Dear Jameel,

 

See if the following are of some help:

A paper which offers comments on selecting a foam material model for simulation (with Poisson's ratio comments):

 

Croop, B., and Lobo, H., "Selecting Material Models for the Simulation of Foams in LS-DYNA", 7th European

LS-DYNA Conference, Salzburg, Austria, May, 2009.

 

http://www.dynalook.com/european-conf-2009/D-II-04.pdf

https://www.dynamore.de/en/downloads/papers/papers-en/09-conference/papers/D-II-04.pdf

 

de Vries, D.V.W.M., "Characterization of Polymeric Foams", Master's Thesis, Department of Mechanical Engineering,

Eindhoven University of Technology, Eindhoven, The Netherlands, July, 2009.

 

http://www.mate.tue.nl/mate/pdfs/10702_sec.pdf

 

Sincerely,

James M. Kennedy

KBS2 Inc.

September 7, 2025

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