不同靶板厚度对混凝土靶的抗侵彻性能研究

Penetrating performance of concrete target with different thickness

为研究混凝土靶厚度对弹坑形成的影响,应用层裂机理进行定性分析。通过弹体贯穿不同厚度混凝土靶的模型试验,获得靶板破坏效果和剩余速度。对贯穿过程进行数值模拟,得到混凝土靶贯穿的内部破坏过程,仿真图像与试验现象吻合较好。根据不同速度和厚度对混凝土靶的剩余速度进行耗能理论计算,得到单位厚度靶板耗能与速度的关系。

In order to study on the formation mechanism of crater, the spallation mechanism was applied. The macroscopic damage images of concrete slabs under impact effect were obtained through model test, and the residual velocity of the projectile was gained. The numerical simulation of damage process of experimental target slabs was accomplished. The physical processes such as penetration perforation and impact perforation of concrete slabs subjected to projectile were displayed visually. The simulation results fit well with the experimental damage image. The energy dissipation of concrete target with different thickness and velocity was analyzed, and the relationship between the energy dissipation and the velocity was obtained.