| 高速冲击下薄壁组合结构吸能特性研究 |
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| 引用本文： | 张涛,刘土光,肖汉林,余晓菲.高速冲击下薄壁组合结构吸能特性研究[J].爆炸与冲击,2006,26(5):395-403. |
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| 作者姓名： | 张涛 刘土光 肖汉林 余晓菲 |
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| 作者单位： | 华中科技大学交通学院,湖北,武汉,430074 |
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| 摘 要： | 研究了高速冲击下组合薄壁结构的吸能特性。采用显式动力有限元方法模拟薄壁结构在轴向冲击下的动态屈曲并分析其吸能特性,通过在结构上增加诱导缺陷和提出新型组合截面来提高其抗冲击吸能性能。同时对多种模型对比分析,研究了不同诱导缺陷、截面形式对吸能特性的影响,以得到最优化的结构。
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| 关 键 词： | 固体力学 吸能 冲击 薄壁结构 诱导缺陷 |
| 文章编号： | 1001-1455(2006)05-0395-09 |
| 收稿时间： | 08 30 2005 12:00AM |
| 修稿时间： | 10 23 2005 12:00AM |
Energy absorption performance of thin-walled structures with triggering holes subjected to high-speed axial impact |
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| ZHANG Tao,LIU Tu-guang,XIAO Han-lin,YU Xiao-fei.Energy absorption performance of thin-walled structures with triggering holes subjected to high-speed axial impact[J].Explosion and Shock Waves,2006,26(5):395-403. |
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| Authors: | ZHANG Tao LIU Tu-guang XIAO Han-lin YU Xiao-fei |
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| Institution: | Huazhong University of Science and Technology, Wuhan 430074, Hubei , China |
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| Abstract: | The energy absorption performance of extruded aluminum tube with multi-cell profiles was evaluated in virtue of computer simulation.Several tube specimens,on which multiform triggering holes were introduced,were investigated via observation of deformation modes and repulsive forces.Strain rates of materials were taken into account in the present anlysis considering the high-speed impact.Comparison of different specimens show that multi-cell profiles can improve energy absorption performance and triggering holes can decrease crushing forces,and that the energy absorptions of the multi-cell profile tubes increase with the corner numbers in the constant profile areas. |
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| Keywords: | solid mechanics energy absorption Thin-shell impact triggering hole |
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