INVESTIGATIONS ON MATERIAL CASUALTY OF PLATES UNDER IMPACT LOAD CONDITIONS

Impact problems are typical in nature since they in volve geometry, boundary and material non-linearity . The impact of projectiles at sub-ordnance velocities against mild steel, stainle ss steel and aluminum plates has been studied. In t his paper, target plates of 3mm thickness of materials Mild steel, Titanium are mad e to impact by Tungsten fragment with different vel ocities 300, 500, 700 and 1000 mm/ms. On impact, kinetic energy and residual veloc ity of this fragment is plotted to visualize the damage of the respective target plate. It is observed that the element size significantly affects the numerical results. Hence a suffi ciently refined mesh is used. Kinetic energy is an essential parameter to be determined i n order to study damage behavior of target. Higher the kinetic energy absorption, leads to higher is the damage target. So, higher in itial velocities are required for the fragment in o rder to create the necessary damage in the target.