| 刚性尖头弹垂直撞击金属靶板耗能分析 |
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| 引用本文： | 宋殿义,蒋志刚,曾首义.刚性尖头弹垂直撞击金属靶板耗能分析[J].弹道学报,2005,17(2):28-32. |
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| 作者姓名： | 宋殿义 蒋志刚 曾首义 |
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| 作者单位： | 国防科技大学渡河系,长沙,410072;国防科技大学渡河系,长沙,410072;国防科技大学渡河系,长沙,410072 |
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| 摘 要： | 将靶板塑性变形耗能分为整体和局部耗能2部分,利用2阶段延性扩孔模型计算局部耗能,根据量纲分析和相似原理,由搜集到的弹道试验数据拟合求得整体变形耗能,得到板厚弹径比大于0.5时金属靶板最小穿透能量和剩余速度计算公式.与金属装甲弹道试验及现有分析模型比较表明,本文公式精度较高.
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| 关 键 词： | 侵彻 金属靶板 弹道极限 最小穿透能量 |
| 修稿时间： | 2004年9月12日 |
ANALYSIS ON ENERGY ABSORPTION OF METALLIC TARGETS STRUCK BY RIGID SHARP-NOSED PROJECTILES |
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| Song Dianyi,Jiang Zhigang,Zeng Shouyi.ANALYSIS ON ENERGY ABSORPTION OF METALLIC TARGETS STRUCK BY RIGID SHARP-NOSED PROJECTILES[J].Journal of Ballistics,2005,17(2):28-32. |
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| Authors: | Song Dianyi Jiang Zhigang Zeng Shouyi |
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| Abstract: | A new semi-empirical formula for the critical impact energy of metallic targets with ratios of plate thickness to projectile diameter between (0.5) and 1.0 struck at normal by rigid sharp-nosed projectiles was proposed. The total amount of energy dissipated by targets is devided into two parts.The first part is the energy dissipated by local deformation of the target,which is calculated with a model of two-stage ductile-hole-enlargement. The second part is the energy dissipated by global deformation of the target, derived from fitting of ballistic test data according to references with dimension analysis method and similitude rule. Comparing with the results of ballistic tests and present analysis model, the proposed formula is in good agreement with ballistic test data of metallic plate with half of or several diameters of projectile. |
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| Keywords: | penetration metallic plate ballistic limit critical impact energy |
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