刻槽弹体旋转侵彻铝靶试验与数值模拟

摘要

To study the rotary penetration effect of grooved projectile,the rotary penetration process of grooved projectile was analyzed,and the experiments of ogive-nosed and grooved projectiles rotationally penetrating into aluminum targets at the impact velocity from 400 m/s to 700 m/s were carried out.The rotary penetration processes of grooved projectile and ogival projectile were numerically simulated by LS-DYNA finite element code.The simulation results agree well with experiment results,and the simulation method is applicable for predicting the results of rotary penetration.Further simulations were conducted at the impact velocity from 300m/s to 700 m/s and rotation velocity in the range of 0—1 500 r/s.Results show that rotation has a significant effect on the penetration depth of grooved projectile.While the rotation and impact velocity of the projectile match reasonably,the rotary grooved projectile can improve the penetration depth effectively.%为研究刻槽弹体旋转侵彻作用性能,分析了刻槽弹体旋转侵彻作用过程,在着靶速度400~700 m/s 范围对刻槽弹体和卵形弹体旋转侵彻铝靶进行了试验研究,利用 LS-DYNA 动力学软件对刻槽弹体和卵形弹体旋转侵彻过程进行了数值仿真,仿真和试验结果吻合较好,表明仿真方法及材料模型的适用性。进行了着靶速度300~700 m/s,转速0~1500 r/s 条件下的仿真试验。仿真结果表明,旋转对刻槽弹体侵深具有很大的影响,在弹体转速和着靶速度达到合理匹配时,旋转的刻槽弹体可以有效地提高弹体的侵深。