Multiphysics Modeling of Composite Beams under Large Temperature Changes

Abstract

Previously developed VABS multiphysics beam model as presented on last SDM is extended to incorporate temperature-dependent materials experiencing large temperature changes. In this study, a new thermomechanical model has been developed for heterogeneous composite materials which removed the restriction on temperature variations and added the dependence of material properties with respect to temperature based on the Kovalenoko’s small-strain thermoelasticity theory. In order to avoid ill-conditioned matrix in multiphysics modeling, a scaling method is presented. Numerical example is provided to show the effect of material temperature-dependency. The pyroelectric and pyromagnetic effects are also discussed.