| Eccentricity Effects on the Crushing History and Energy Absorption of Metal Tubes Collapsed in Concertina Mode |
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| 作者姓名： | 宋宏伟 范子杰 谭惠丰 王青春 |
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| 作者单位： | [1]StateKeyLaboratoryofAutomotiveSafetyandEnergy,DepartmentofAutomotiveEngineering,TsinghuaUniversity,Beijing100084,China／／InstituteofMechanics,ChineseAcademyofSciences,Beijing100080,China [2]StateKeyLaboratoryofAutomotiveSafetyandEnergy,DepartmentofAutomotiveEngineering,TsinghuaUniversity,Beijing100084,China [3]CenterforCompositeMaterials,HarbinInstituteofTechnology,Harbin150001,China |
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| 基金项目： | Supportedby the National Postdoctoral Science Foundation (No.2002-17) and the National Natural Science Foundation of China(No. 50275077) |
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| 摘 要： | The classical problem of a round metal tube collapsing in concertina mode when subjected to axial compressive loading has been reexamined both theoretically and experimentally. The model including an eccentricity factor proposed by Wierzbicki et al. and modified by Singace et al. has been taken one step further to obtain the real load-displacement history and to investigate eccentricity effects. The influence of the eccentricity parameter m on the mean crushing load was discussed according to the present analysis.Experiments were carried out to verify the eccentricity effects. The results show that experimental and theoretical load-displacement curves match perfectly, especially in terms of half wavelength. Unlike previous researchs, the results suggest that m is not a fixed value and may affect energy absorption.
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| 关 键 词： | 离心率 金属壳电子管 能量吸收能力 刚性塑料 汽车 防撞性 |
| 收稿时间： | 3 September 2003 |
Eccentricity Effects on the Crushing History and Energy Absorption of Metal Tubes Collapsed in Concertina Mode |
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| SONG Hongwei ,FAN Zijie TAN Huifeng ,WANG Qingchun . State Key Laboratory of Automotive Safety and Energy.Eccentricity Effects on the Crushing History and Energy Absorption of Metal Tubes Collapsed in Concertina Mode[J].Tsinghua Science and Technology,2005,10(2):196-203. |
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| Authors: | SONG Hongwei FAN Zijie TAN Huifeng WANG Qingchun State Key Laboratory of Automotive Safety and Energy |
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| Institution: | SONG Hongwei 1,2,FAN Zijie TAN Huifeng 3,WANG Qingchun 1 1. State Key Laboratory of Automotive Safety and Energy,Department of Automotive Engineering,Tsinghua University,Beijing 100084,China,Institute of Mechanics,Chinese Academy of Sciences,Beijing 100080,China,3. Center for Composite Materials,Harbin Institute of Technology,Harbin 150001,China |
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| Abstract: | The classical problem of a round metal tube collapsing in concertina mode when subjected to axial compressive loading has been reexamined both theoretically and experimentally. The model including an eccentricity factor proposed by Wierzbicki et al. and modified by Singace et al. has been taken one step further to obtain the real load-displacement history and to investigate eccentricity effects. The influence of the eccentricity parameter m on the mean crushing load was discussed according to the present analysis. Experiments were carried out to verify the eccentricity effects. The results show that experimental and theo- retical load-displacement curves match perfectly, especially in terms of half wavelength. Unlike previous re- searchs, the results suggest that m is not a fixed value and may affect energy absorption. |
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| Keywords: | metal tube axial crushing energy absorption rigid plastic eccentricity |
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