Constitutive Modelling of Thermoplastics: Parameters Identification Procedure (original) (raw)

Polymers are increasingly used in the transport sector, particularly for enhancing structural integrity and safety. Notably, there is a critical need for reliable material models within finite element codes to aid in the application of thermoplastics for impact protection systems. This study presents a new hyperelastic-viscoplastic constitutive model for thermoplastics developed under isothermal conditions, accompanied by an optimization methodology for parameter identification through nonlinear inverse computational methods, showcasing the ability to effectively characterize various thermoplastic materials.