*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)
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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