Numerical Simulation On The Titanium Alloy Plates Against Fragments

In recent years, many countries have taken the titanium alloy as a new structural materialand used it for conventional weapons. Titanium alloy has high specific strength and gooddynamic mechanical properties. If we use titanium alloy for armored vehicles, the weight ofarmored vehicles can be reduced and maneuvering characteristics can be increased. Comparedwith traditional steel armor, titanium alloy has more obvious advantages. Therefore, thecomprehensive research of titanium alloy against armour-piercing projectile and bullet is veryimportant.In this paper, ballistic tests were simulated, simulation results are the same withexperimental results. It proves that the material model parameters used in this article isreliable，accurate and scientific. With the accurate material parameters, nonlinear dynamicsanalysis software LS-DYNA is used to simulate the penetration of spherical, square,cylindrical prefabricated fragments to titanium alloy target with different angles. Then thepenetration speed limit laws of different fragments to titanium alloy target have been got.The ballistic limit velocity formula of titanium alloy target have been established. Finally，thispaper analyses the structure of light infantry fighting vehicle and establishes the equivalentmodel of the turret. Then the turret t is simulated as the targe and gets itspenetration speedlimit law. On this basis, this paper presents several schemes to improve the performance of theturret and the final scheme is determined, it not only reduces the weight of armored vehiclesbut also improves its anti-bullet capability.