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兵工学报 ›› 2025, Vol. 46 ›› Issue (6): 240533-.doi: 10.12382/bgxb.2024.0533

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横向效应增强侵彻体撞击靶板后破片径向速度预测模型的对比分析

王展翾1, 李欣田1, 徐立志1,*(), 杜忠华1,2,**()   

  1. 1 南京理工大学 机械工程学院, 江苏 南京 210094
    2 沈阳理工大学 装备工程学院, 辽宁 沈阳 110158
  • 收稿日期:2024-07-02 上线日期:2025-06-28
  • 通讯作者:
  • 基金资助:
    国家自然科学基金青年基金项目(12202207); 中国博士后科学基金面上项目(2022M711623); 江苏省自然科学基金青年基金项目(BK20220968); 冲击与安全工程教育重点实验室(宁波大学)开放基金项目(CJ202201); 工程材料与结构冲击振动四川省重点实验室开放基金项目(22kfgk03); 江苏省研究生科研与实践创新计划项目(SJCX24_0147)

Comparative Study on Predictive Models for Radial Velocities of Fragments after PELE Impacting on Target Plates

WANG Zhanxuan1, LI Xintian1, XU Lizhi1,*(), DU Zhonghua1,2,**()   

  1. 1 School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
    2 School of Equipment Engineering, Shenyang Ligong University, Shenyang 110158, Liaoning, China
  • Received:2024-07-02 Online:2025-06-28

摘要:

为进一步对具有横向效应增强的侵彻体(Penetrator with Enhanced Lateral Effect,PELE)侵彻金属靶板后破片的最大径向速度进行有效预测,采用数值模拟与理论分析的方法,对PELE撞击靶板时的碰撞压力、径向压力和破片停止加速时间进行详细的对比分析。研究结果表明:弹性波理论低估了PELE撞击靶板时的碰撞压力,而冲击波理论的计算结果与实际情况更加吻合;轴向压力全部转换为径向压力而不是一定比例转换;当壳体达到最大失效应变时,壳体开始破碎,并停止加速更符合实际情况。通过上述分析改进了径向速度模型,并分别与弹性波模型、冲击波模型和试验结果进行对比,在碰撞压力较大时,新模型能够对PELE侵彻金属靶板后破片的最大径向速度进行有效预测。

关键词: 侵彻体, 横向效应增强, 碰撞压力, 径向压力, 改进径向速度模型

Abstract:

In order to effectively predict the maximum radial velocity of fragments formecd after a penetrator with enhanced lateral effect (PELE) penetrating a metal target plate,the collision pressure,radial pressure,and fragment stop acceleration time when the PELE impacts the target plate are analyzed through numerical simulation and theoretical analysis method.The results show that the elastic wave theory underestimates the collision pressure when the PELE impacts the target plate,and the calculated results of the shock wave theory are more consistent with the actual situation.The axial pressure is all converted to radial pressure instead of a certain proportion.When the shell reaches the maximum failure strain,it starts to break and stops accelerating,which is more consistent with the actual situation.The radial velocity model is improved based on the above analysis,and compared with the elastic wave model,shock wave model and test results,respectively.When the collision pressure is high,the proposed model is able to effectively predict the maximum radial velocity of fragments after the PELE penetrates into the metal target plate.

Key words: penetrator, enhanced lateral effect, impact pressure, radial pressure, improved radial velocity model

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