An elasto‐viscoplastic constitutive model for the rate‐dependent behavior of polyvinylidene fluoride

To model the engineering performance of components made polyvinylidene fluoride (PVDF), 3D elasto-viscoplastic Eindhoven glassy polymer (EGP) is extended to describe rate-dependent behavior PVDF. Careful analysis intrinsic PVDF revealed that postyield compressive response shows a strain rate-dependence evolves with increasing deformation. The extension constitutive captures deformation-dependent evolution activation volume and rate-factor, which describes driving stress. Given significant temperature-dependent behavior, has been characterized for different temperatures (23, 55 75 °C). accuracy validated by means tension creep experiments at these temperatures. implemented in finite element simulations results are compared experiments. It shown proposed allows an accurate prediction short- long-term