On the Elastic Modeling of Highly Extensible Polyurea

Polyurea is a soft and highly flexible material commonly used as protective coating on concrete or steel structures. Often subjected to abrasion and impact loading, numerical simulations of such structures require material models accounting for both stiffness and high extensibility of the coating. Hence, comparing several classical approaches with emphasis on efficiency and material stability, for impact simulations a Mooney-Rivlin model with μ1 = 6 MPa and μ2 = 1.5 MPa is suggested. Therefor material parameters from different sources are collected and, additionally, data from our uniaxial tension experiments are provided. The modeling is verified by comparison with a Taylor anvil impact experiment