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Multiaxial behavior of foams – Experiments and modeling

Article dans une revue avec comité de lecture
Author
MAHEO, Laurent
414778 Centre de recherche des écoles de Saint-Cyr Coëtquidan [Guer] [CREC]
168236 Université de Bretagne Sud - Lorient [UBS Lorient]
ccGUÉRARD, Sandra
RIO, Gérard
168236 Université de Bretagne Sud - Lorient [UBS Lorient]
DONNARD, Adrien
ccVIOT, Philippe

URI
http://hdl.handle.net/10985/17245
DOI
10.1051/epjconf/20159404035
Date
2015
Journal
EPJ Web of Conferences

Abstract

Cellular materials are strongly related to pressure level inside the material. It is therefore important to use experiments which can highlight (i) the pressure-volume behavior, (ii) the shear-shape behavior for different pressure level. Authors propose to use hydrostatic compressive, shear and combined pressure-shear tests to determine cellular materials behavior. Finite Element Modeling must take into account these behavior specificities. Authors chose to use a behavior law with a Hyperelastic, a Viscous and a Hysteretic contributions. Specific developments has been performed on the Hyperelastic one by separating the spherical and the deviatoric part to take into account volume change and shape change characteristics of cellular materials.

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