Constitutive Modelling of Ultra-High Molecular Weight Semi-Crystalline Polymers over a Large Rage of Strain Rates

摘要

In this study, we developed an innovative three-dimensional constitutive model which consider the evolving mechanical coupling between crystalline lamellae and confined amorphous phase during the deformation of ultra-high molecular weight semi-crystalline polymers. A good agreement is observed between the experimental results and the numerical predictions for both loading and unloading cases over a large range of strain rates.