为研究某钻地弹侵彻时对混凝土产生的损伤,设计缩比实验,制作了多层彩色混凝土靶体,并用LS-DYNA软件对实验进行仿真。侵彻后将靶体切开,依据混凝土不同的颜色观察到弹孔周边3倍以上弹径的混凝土区域发生了位移,根据切割断面的干湿分界线判断出混凝土隧道区的损伤情况。软件仿真得到与实验结果相近的数据,表明可以将此种仿真方法扩展到真实弹的侵彻研究上,满足工程研究的需要。

In order to study the concrete's damage caused by the EPW's penetration, the subscale test was designed and multilayer colorized concrete target was made, the experiment was simulated with LS-DYNA3D. After being penetrated by the kinetic energy projectile, the target was cut. Since the concrete had different color in different part, it was found that the concrete surrounding the bullet-hole had displacement and the region was more than triple projectile diameter. Based on dry and wet dividing line on the concrete cut surface, the damage of transit tunnel was obtained. Through comparing the experimental data with the simulation result, it shows that the numerical analysis tallied closely the experiment. The simulation study method can be used in the penetrating study of the real projectile and it can satisfy the demand of engineering study.