Effect of kinetic energy on stress behavior of coated glass plates

Abstract

Glass plates are generally coated with films to improve their ability to withstand external wind and impacts. In this study, the effects of the kinetic energy of impacting objects on the dynamic behavior of coated glass plates are investigated using a powerful impact finite element approach in conjunction with the Reddy’s higher-order shear deformation theory and a generalized power law. The results show that, unlike most homogeneous materials, which show the maximum principal stress σ1 on the surface right under-neath the indenter, the coated glass plate investigated in this study shows the maximum principal stress σ1 on the interface between film and glass. This indicates that the film–glass interface is more prone to failure than the other layer. The simulation approach es-tablished in this study allows the quantitative evaluation of the impact behavior of coated glass plates according to the impact veloci-ty.