无攻角弹体斜侵彻多层间隔混凝土靶板特性

摘要

In order to understand the characteristics of projectile penetrating obliquely into multi-layered spaced concrete targets with no attack angle, a series of numerical simulation of the process of projectile penetrating into target is done by the finite element code LS-DYNA 3D. The basic phenomena of oblique penetration is described in detail, the variation regularity of acceleration in X and Y direction is analyzed, the effects of targets' space and number of layers on anti-penetrated performance are obtained. The research indicates that when the total thickness is invariable the decrease of space or increase of number can debase the anti-penetrated performance of target. But the anti-penetrated performance will change little with the increase of number if the number of layers is magnitude. The results have reference value for the build of contravallation and underground blindage.%为了能清楚地了解无攻角弹体斜侵彻多层间隔混凝土靶板的特性,采用LS-DYNA3D动力有限元软件对弹-靶作用过程进行了一系列数值模拟研究,描述了斜侵彻过程中的基本现象,分析了弹体X、Y两个方向的加速度变化规律,揭示了靶板间距、层数对抗弹性能的影响.研究表明,在总厚度一定的情况下,靶板间距的减小或者层数的增加均会降低靶板的抗弹性能,但当靶板层数较多时,抗弹性能随靶板层数的增加变化不大.所得结论对防御工事、地下掩体的构建具有参考价值.