Numerical simulation on concrete target penetrated by warhead of different titanium alloy shaped charge

In order to realize the large hole penetration of the concrete medium by the shaped charge,numerical simulation method was adopted using the dynamic software Autodyn-2D. The different processes of TC4 titanium alloy jet of three kinds charging structure penetrating the high strength concrete targets were simulated and calculated respectively,and the law of forming and penetrating of jet was analyzed. Studies show that when the burst height is two times charge's diameter,the penetration depth of the jet of cone liner can reach 6 times the diameter,the penetration hole of the jet of sub-hemisphere liner is larger than 0.6 times diameter. The penetrating hole of the jet of the arc-cone liner combines the advantages of two traditional structures of shaped charge,meeting the requirements of both diameter and depth of concrete crater at the same time.