平头弹低速侵彻黏土的数值模拟研究

为研究平头弹低速侵彻黏土规律,采用ANASYS AUTODYN程序对不同横截面积的弹体在不同初速度下侵彻黏土进行了数值模拟。侵彻深度和弹道的形状与试验结果吻合。对平头弹侵彻深度的分析结果表明:对同一型号弹体,最终侵彻深度与弹体初速呈线性关系,即侵彻深度随弹体初速增加而线性递增。在相同的侵彻初速度下,弹体直径每增加一倍,引起侵彻深度增量基本相同。

Numerical simulation of flat-nose projectile low-velocity penetration into clay soil

The flat-nose projectile low-velocity penetration in clay soil was simulated with various ranges of caliber and impact velocities by using ANASYS-AUTODYN software. The penetration depth and crater shape were in agreement with the results of laboratory experiment. The penetration depths of various initial conditions were discussed. The results demonstrated that the penetration depth keeps a linear relationship with impact velocity and the penetration depth appears linearly increase with the impact velocity upwards. The increment of penetration depth caused by doubling projectile caliber approximatively keeps constant.