Development of a constitutive model for erosion based on dissipated particle energy to predict the wear rate of ductile metals

Subsequently, an improved energy based erosion model incorporating the surface material properties such as elastic modulus, Poisson's ratio, dynamic pressure and coefficient of restitution was developed. In particular, the new erosion model was developed in this study based on impact parameters, surface material properties and energy factors. The theoretical results using the model compared well with the experimental erosion rates and concluded that the model could accurately predict the experimental erosion values at all tested impact angles from 15° to 90° and impact velocities from 30 ms−1 to 90 ms−1. The developed model also enables determination of the coefficient of restitution, strain rate, dynamic pressure and some valuable parameters to determine the erosion mechanism.