Impact analysis using explicit Dynamics analysis ON different materials

Abstract

High velocity impact is of concern to many different fields and has been the subject of much research, especially in the last 50 years. Over this period of time, the methods used to analyze impact have changed naturally, as have the disciplines interested in these analyses. Researchers are still trying to get a clear cut picture of the impact performance. Mainly this applies to the defense industry. Armor flexibility and impact resistance are extremely important in warfare applications. The failure of an AL6061-T6 and steel 1006 composite plate under high-velocity impact from an S-S (structural Steel) projectile tool was investigated using the nonlinear explicit finite element software, ANSYS AUTODYAN. velocity range of 700 m/s were used for FEM simulation. It was analyzed that AL6061-T6 is more resistant than steel 1006 at both ranges but steel 1006 is light in weight than AL6061 and have more application in aviation industry. The composite laminate and the tool were venerated by solid FEM elements. The contact between the tool and plate was simulated using a surface-to-surface eroding contact algorithm. It was also observed that tool dimension and mass play important role in failure conditions. The Explicit Dynamics method is made to enable to simulate nonlinear structural mechanics applications involving high velocity impact analysis, stress wave propagation, high frequency response, large deformations, material model and behaviour, structural buckling and failure between bonded surfaces like welds, bolted joints etc