Extension of the Bergström-Boyce Model to High Strain Rates

Abstract

Abstract A filled polybutadiene elastomer, typical of that used in the construction of golf balls, is tested at high (> 5000s−1) and low (< 0.5s−1) strain rates. By using nonlinear least-squares estimation, limited to a physically realizable search domain, suitable parameters are found for the Bergström-Boyce model of time dependent finite strain elasticity. These parameters are shown to successfully represent the material behavior over this broad range of strain rates.