Numerical simulation of high-speed impacts involving metallic and non-metallic materials

Abstract

High-speed impacts such as ballistic and hurricane debris can cause severe damages due to the high kinetic energies in the impacting objects. A good understanding of the mechanism of high-speed impacts can help develop impact-resistant or protective systems. Experimental studies of high-speed impact problem, though valid and useful, are often limited and challenged by the large, nonlinear deformations and contacts involved in such problems. To this end, physical experiments are best used as a validation tool rather than an exploration tool for new system designs. In this study, nonlinear finite element simulations are performed to evaluate the response of metallic materials (e.g. steels) and non-metallic materials (e.g. woven fabrics) under high-speed impacts. In addition, the effects of layered structures of different types of materials as well as layer configurations are investigated.