Micromechanical approach for the behaviour of open cell foams

摘要: The objective of this paper is the prediction macroscopic behaviour open-cell foams in elasticity and viscoelasticity as function their microstructure by using a micromechanical approach. Open cellular materials are characterised remarkable mechanical properties with light weight. Such largely used various applications mainly energy absorption. Polyurethane foam an application once its majorly described foam. Finite Element computations performed on unit cell subjected to periodic boundary conditions. Then, model based Cosserat homogenisation framework predict elasticity. linear viscoelastic deduced from elastic results taking advantage correspondence principle. Finally, confronted models developed literature.