战斗部后端盖结构强度的数值仿真及应力波分析方法
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摘要
针对战斗部侵彻过程中发生后端盖引信室剪切现象,提出采用数值仿真及应力波计算模型分析的方法,该方法首先建立了数值仿真模型并进行了计算,其次建立了应力波传播到后端盖端面后的传播计算模型,以及战斗部侵彻不同靶标时初始应力波的计算模型,并进行了相互校核。分析结果表明,战斗部以相同状态侵彻钢靶产生的初始应力波强度约为侵彻C40钢筋混凝土靶的2.7倍,未装配引信的引信室端面应力约为装配引信的引信室端面应力的2.8倍,即战斗部后端盖引信室内装配引信可大幅提高该部位的结构强度安全系数.
In order to research the phenomenon of fuze chamber shearing when penetration,a numerical simulation model was set up and the calculation was carried out,the mathematical model of stress wave propagation in the back end cap and the mathematical model of initical stress wave were set up when warhead penetrating target,the theoretical calculation and numerical simulation calculation were examined by each other.The initial stress wave intensity of warhead penetrating steel target was 2.7 times as much as the initial stress wave intensity of warhead penetrating C40 reinforced concrete target,and when the fuze was not assembled,the stress of fuze hole end surface was 2.8 times as much as the stress of fuze hole end surface when the fuze was assembled,so the safety factor of structural strength of fuze hole would dramatically increase when the fuze was assembled.
In order to research the phenomenon of fuze chamber shearing when penetration,a numerical simulation model was set up and the calculation was carried out,the mathematical model of stress wave propagation in the back end cap and the mathematical model of initical stress wave were set up when warhead penetrating target,the theoretical calculation and numerical simulation calculation were examined by each other.The initial stress wave intensity of warhead penetrating steel target was 2.7 times as much as the initial stress wave intensity of warhead penetrating C40 reinforced concrete target,and when the fuze was not assembled,the stress of fuze hole end surface was 2.8 times as much as the stress of fuze hole end surface when the fuze was assembled,so the safety factor of structural strength of fuze hole would dramatically increase when the fuze was assembled.
引文
[1]赵小龙,马铁华,徐鹏,等.弹丸侵彻混凝土加速度信号测试及分析[J].爆炸与冲击,2014,34(3):347-353.
[2]张丁山,吕永柱,周涛,等.侵彻战斗部引信前后置过载的影响因素[J].探测与控制学报,2016,38(6):41-45.
[3]徐蓬超,黄惠东,揭涛,等.高超音速侵彻引信中的泡沫铝垫片[J].探测与控制学报,2010,32(6):63-67.
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[6]王永刚,王礼力.平板撞击下C30混凝土中冲击波的传播特性[J].爆炸与冲击波,2010,30(2):119-124.
[7]尚雅玲,彭艳垒,刘华文,等.超音速反舰导弹引信延期作用时间[J].探测与控制学报,2013,35(1):6-9.
[8]倪庆乐,王雨时,闻泉,等.基于有限元的裸态弹丸底向下跌落冲击特性[J].探测与控制学报,2016,38(6):51-56.
[9]姚磊,李永池.应力波在变截面体中的传播特性[J].爆炸与冲击,2007,27(4):345-350.
[10]陈勇军,王雨时,闻泉.炮射穿甲爆破弹弹底引信前冲过载系统仿真方法[J].探测与控制学报,2015,37(2):41-44.
[11]王礼立.应力波基础[M].北京:国防工业出版社,2010:58-62.
[2]张丁山,吕永柱,周涛,等.侵彻战斗部引信前后置过载的影响因素[J].探测与控制学报,2016,38(6):41-45.
[3]徐蓬超,黄惠东,揭涛,等.高超音速侵彻引信中的泡沫铝垫片[J].探测与控制学报,2010,32(6):63-67.
[4]穆朝民,任辉启.弹丸对钢筋混凝土中钢筋交汇处侵彻效应研究[J].高压物理学报,2010,24(5):351-357.
[5]汪斌,曹仁义,谭多望.大质量高速动能弹侵彻钢筋混凝土的实验研究[J].爆炸与冲击,2013,33(1):98-102.
[6]王永刚,王礼力.平板撞击下C30混凝土中冲击波的传播特性[J].爆炸与冲击波,2010,30(2):119-124.
[7]尚雅玲,彭艳垒,刘华文,等.超音速反舰导弹引信延期作用时间[J].探测与控制学报,2013,35(1):6-9.
[8]倪庆乐,王雨时,闻泉,等.基于有限元的裸态弹丸底向下跌落冲击特性[J].探测与控制学报,2016,38(6):51-56.
[9]姚磊,李永池.应力波在变截面体中的传播特性[J].爆炸与冲击,2007,27(4):345-350.
[10]陈勇军,王雨时,闻泉.炮射穿甲爆破弹弹底引信前冲过载系统仿真方法[J].探测与控制学报,2015,37(2):41-44.
[11]王礼立.应力波基础[M].北京:国防工业出版社,2010:58-62.