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Analytical model of projectile penetrating ceramic-UHMWPE composite armor


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Analytical model of projectile penetrating ceramic-UHMWPE composite armor
Mo GenlinWu ZhilinLiu Kun
School of Mechanical Engineering,NUST,Nanjing 210094,China
Aleksevskii-Tate equation composite armors ultra-high molecular weight polyethylene impact analytical model
The process of projectiles penetrating ceramic-ultra-high molecular weight polyethylene(UHMWPE)composite targets is divided into two parts:the interaction between the projectile and the ceramic cone and the interaction between the ceramic cone and the backing plate,and the analytical model is set up.Assuming the stress in the plastic flow region satisfies the modified Bernoulli equation,moving equations of the projectile and the ceramic cone are established according to the theorem of momentum.The motion of the backing plate is established according to the conservation law assuming the angle of the backing plate cone is constant.The erosion length of the projectile,the penetration depth in the backing plate,and the deflection radius and the height can be calculated by the model.For the 7.62 mm projectiles penetrating the bulletproof ceramic plate,relative errors between predictions and experimental results are less than 25%.


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Last Update: 2013-10-31