Modelling of the mechanical behavior of polyurethane foams by means of micromechanical characterization and computational homogenization

A modelling strategy based on micromechanical characterization and computational homogenization has been developed to determine the mechanical behavior of rigid, closed-cell PU foams taking into account the microstructural features. The macroscopic mechanical properties of the foam were obtained by means of the finite element simulation of a representative volume element of the PU foam. The foam microstructure in the model was obtained from the...