| 横向效应增强型侵彻体撞击金属薄板理论模型 |
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| 引用本文： | 杜忠华,宋丽丽.横向效应增强型侵彻体撞击金属薄板理论模型[J].南京理工大学学报(自然科学版),2011,35(6). |
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| 作者姓名： | 杜忠华 宋丽丽 |
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| 作者单位： | 南京理工大学机械工程学院,江苏南京,210094 |
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| 摘 要： | 为了分析影响横向效应增强型侵彻体( PELE)弹壳体横向速度的因素,该文建立了其横向速度的理论分析模型.该模型基于动能定理和动量定理,考虑了PELE弹对金属薄板灵敏度的要求,结合了PELE弹作用原理及其对金属薄板的作用特点.综合考虑了装填材料及靶板材料的声阻抗、弹体的密度和泊松比、靶板密度及厚度、着靶速度、弹丸壳体的内外径比和长径比因素.结合实战用PELE弹的结构、靶板条件和速度范围,利用LS-DYNA软件进行了三维数值仿真.研究结果发现:PELE弹在壳体自身和装填材料的共同作用下,壳体的横向速度随着弹丸着靶速度和装填材料声阻抗的增大而增大,其理论分析模型计算结果与仿真结果一致性较好.
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| 关 键 词： | 横向效应增强型侵彻体 金属薄板 横向速度 动能定理 动量定理 声阻抗 |
Theoretical Model of Penetrator with Enhanced Lateral Effect Impacting Thin Metal Target |
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| DU Zhong-hua
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SONG Li-li.Theoretical Model of Penetrator with Enhanced Lateral Effect Impacting Thin Metal Target[J].Journal of Nanjing University of Science and Technology(Nature Science),2011,35(6). |
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| Authors: | DU Zhong-hua SONG Li-li |
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| Institution: | DU Zhong-hua,SONG Li-li(School of Mechanical Engineering,NUST,Nanjing 210094,China) |
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| Abstract: | To analyze the factors influencing the lateral velocity of penetrator with enhanced lateral effect(PELE)shell,a theoretical analysis model for its lateral velocity is established.According to the requirement of thin metal target sensitivity,the model based on the kinetic energy theorem and momentum theorem is combined with the principle and features of the PELE penetrating thin metal targets.The acoustic impedances of fillers and target materials,the density and Poisson ' s ratio of shells,the density and t... |
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| Keywords: | penetrator with enhanced lateral effect thin metal targets lateral velocity kinetic energy theorem momentum theorem acoustic impedances |
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