半球头长杆弹高速侵彻半无限厚靶临界速度理论模型

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振动与冲击 ›› 2019, Vol. 38 ›› Issue (9) : 8-14.

论文

刘闯 1 ，张先锋 1，黄长强 1，2，丁力 1，徐晨阳 1，邓佳杰 1

作者信息 +

Critical speed theoretical model for hemispherical long rod projectiles’ penetrating semi-infinite thick target at high velocity

LIU Chuang1, ZHANG Xianfeng1, HUANG Changqiang1,2,DING Li1,XU Chenyang1, DENG Jiajie1

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文章历史 +

摘要

高速/超高速侵彻问题一直是武器设计者和防护工程专家关注的焦点问题之一。随着撞击速度的提高，弹体由刚体侵彻转入变形、流体侵彻状态，进而导致侵彻深度不再随速度呈单一上升趋势。为预测大着速范围下弹体的侵彻状态，本文基于弹体质量守恒、动量守恒及弹体动态强度计算方法，建立了弹体侵彻过程中的动力学平衡方程，进而确定高速侵彻临界速度。在与已有实验结果对比验证的基础上，分析了不同弹靶参数对侵彻临界速度的影响规律。结果表明：随着弹体静态屈服强度增大，弹体的变形长度减小，弹体的临界侵彻速度增大；弹靶塑性波波速等参数对高速侵彻状态临界速度也有显著影响。

Abstract

In order to destroy protected fortifications，researchers are putting more and more attention on hypervelocity penetration. With the increase of impact velocity, rigid penetration of the projectile will transfer to the deformation and hydrodynamic penetration. During this process, the depth of penetration (DOP) of long rod projectile (LRP) may change at a transition point form increase to decrease. Based on conservation laws of quality and momentum, theoretical equations were established to calculate the transition velocity between deformation and hydrodynamic penetration. Also the influence of the penetrator and target parameters on the transition velocity were analyzed after verifying the reliability of calculation model. The calculation results show that with the increasing of static yield strength, deformation length of the projectile is decreased, the transition velocity between deformation penetration and hydrodynamic penetration are decreased. Accordingly, projectile and target plastic wave velocity have significantly influences on the critical velocity.

导出引用

刘闯 1,张先锋 1，黄长强 1，2，丁力 1，徐晨阳 1，邓佳杰 1 . 半球头长杆弹高速侵彻半无限厚靶临界速度理论模型[J]. 振动与冲击, 2019, 38(9): 8-14

LIU Chuang1, ZHANG Xianfeng1, HUANG Changqiang1,2,DING Li1,XU Chenyang1, DENG Jiajie1. Critical speed theoretical model for hemispherical long rod projectiles’ penetrating semi-infinite thick target at high velocity[J]. Journal of Vibration and Shock, 2019, 38(9): 8-14

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