COMPARATIVE NUMERICAL STUDY OF FEM AND SPH METHOD FOR BULLET-MULTILAYERED PLATE IMPACT SIMULATION

Abstract

This paper presents a numerical simulation of the impact problem of a bullet into a two layered composite plate representing an armor used for the human protection. The approach of this problem is performed using both classical Finite Element Method (FEM)and Smoothed Particle Hydrodynamics (SPH). The aim of the work is to point out that the SPH method is a valuable numerical approach of the impact problems of the composites. The penetration and perforation of a composite that could occur as a result of an impact process are a complex problem which implies many technical and design aspects. This numerical study deals mainly with the impact velocity effect on the delaminating area of the impact zone. The numerical solutions obtained by both methods are very close and the good investigating potential of the SPH method is pointed out.