Modelling large-strain deformation of thermo-rheologically complex materials : characterisation and validation of PMMA and iPP

Abstract

In this study an attempt is made to describe the thermorheologically complex deformation behaviour of the glassy polymer PMMA and semi-crystalline polymer iPP, by using a constitutive modelling approach [1]. For both polymers, it is shown that this approach successfully captures the thermorheologically complex behaviour of PMMA and iPP. Moreover, the model is capable of predicting yield stress and creep lifetime of PMMA using only one parameter set