Thermo-mechanical behavior prediction of particulate reinforced shape memory polymer composite

A micromechanics model based on thermal viscoelasticity constitutive relation is presented to investigate the thermal-mechanical behavior of particulate reinforced shape memory polymer composite (SMPC). Based on the thermomechanical constitutive relation assumption and linear elastic constitutive relation assumption, the effective properties of SMPC are studied by using a micromechanics method. Through analyzing the constitutive theories of polymer and multi-walled carbon nanotubes (MWCNTs), as well as the filling quality of particles, the generalized Maxwell model (GMM) combined with Mori-Tanaka theory is developed, and the thereto-mechanical cycle behavior of SMPC is studied emphatically. Moreover, a set of uniaxial tensile experiments, stress relaxation tests and thermal-mechanical cycle tests are performed to verify the developed model. Eventually, the developed model is validated using a simulated example and experiment to ensure its creditability.