破片侵彻下装甲结构多损伤模式毁伤概率分析  

Damage Probability Analysis of Armor Structure with Multiple Damage Modes under Fragment Penetration

作　　者：丁铭 刘永寿[2] 张宇 白春玉[1] 杨强[1] DING Ming;LIU Yong-shou;ZHANG Yu;BAI Chun-yu;YANG Qiang(Aviation Key Laboratory of Science and Technology on Structures Impact Dynamics,Aircraft Strength Research Institute of China,Xi an 710065,China;School of Mechanics and Civil Engineering,Northwestern Polytechnical University,Xi an 710072,China)

机构地区：[1]中国飞机强度研究所结构冲击动力学航空科技重点实验室,西安710065 [2]西北工业大学力学与土木建筑学院,西安710072

出　　处：《科学技术与工程》2024年第36期15447-15456,共10页Science Technology and Engineering

基　　金：航空科学基金(20220041053006)。

摘　　要：装甲结构在作战环境中暴露在目标外部成为破片首要打击目标,为研究装甲结构在破片打击下造成的多模式损伤,以破片侵彻下的装甲结构作为研究对象,建立一套多损伤模式的毁伤概率计算分析方法。基于LS-DYNA仿真计算分析各个损伤模式并确定阈值点,绘制以速度和角度为二维输入变量的装甲结构损伤仿真相图。基于射线与平面交点计算完成破片与装甲结构交汇问题的求解,将求解结果作为输入变量输入损伤仿真相图,以损伤仿真相图输出结果作为各损伤模式判据,采用Monte Carlo法计算装甲结构在破片侵彻下的各损伤模式的毁伤概率,建立毁伤概率曲线。搭建可视化输出平台,根据实验矩阵计算获得多模式损伤云图。结果表明:破片在以不同速度和不同角度下打击装甲结构会形成跳飞、侵彻、穿透3种结构损伤模式,程序可根据破片不同的打击方式计算各损伤模式下的毁伤概率并输出损伤云图。The armored structure is exposed to the outside of the target in the combat environment and becomes the primary target of fragmentation.In order to study the multi-mode damage caused by fragmentation,a set of multi-mode damage probability calculation and analysis method was established based on the armored structure penetrated by fragmentation.Based on LS-DYNA simulation calculation,each damage mode was analyzed and the threshold point was determined,and the armor structure damage simulation phase diagram with speed and angle as two-dimensional input variables was drawn.The intersection problem of fragments and armor structure was solved based on the calculation of the intersection point of ray and plane.The solution result was input into the damage simulation phase diagram as input variable,and the output result of the damage simulation phase diagram was used as the criterion of each damage mode.The damage probability of each damage mode under fragment penetration of armor structure was calculated by Monte Carlo method,and the damage probability curve was established.The visual output platform was built and the multi-mode damage cloud image was obtained according to the experimental matrix calculation.The results show that three damage modes,ricochet,penetration and penetration,can be formed when the fragments hit the armor structure at different speeds and angles.The program can calculate the damage probability of each damage mode and output the damage cloud map.

关 键 词：装甲结构 破片 毁伤概率 损伤相图 Monte Carlo法 

分 类 号：TJ811.92[兵器科学与技术—武器系统与运用工程]