| 轴向冲击载荷作用下弹性圆柱壳横向弯曲动态屈曲 |
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| 引用本文： | 马建青,徐新生,Lim C.W.,褚洪杰.轴向冲击载荷作用下弹性圆柱壳横向弯曲动态屈曲[J].力学学报,2010,42(4):702. |
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| 作者姓名： | 马建青 徐新生 Lim C.W. 褚洪杰 |
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| 作者单位： | 1. 大连理工大学工程力学系工业装备结构分析国家重点实验室,116024;2. 大连理工大学;3. City University of Hong Kong;4. 大连理工大学工程力学系; |
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| 基金项目： | 香港城市大学基金，国家重点基础研究发展计划(973)项目，博士学科点基金 |
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| 摘 要： | 研究在轴向冲击载荷下弹性圆柱壳动态屈曲问题.通过构造哈密顿体系,在辛空间中将临界载荷和动态屈曲模态归结为辛本征值和本征解问题.辛本征解反映了局部的压缩屈曲模态和整体的弯曲屈曲模态,特别是在冲击端为自由支承边界时的特殊屈曲方式.数值结果给出了具体的临界载荷和屈曲模态规律.
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| 关 键 词： | 哈密顿体系 圆柱壳 轴向冲击 应力波 |
| 收稿时间： | 2008-11-03 |
| 修稿时间： | 2009-11-24 |
DYNAMIC FLEXURE BUCKLING OF ELASTIC CYLINDRICAL SHELLS UNDER AXIAL IMPACT |
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| Ma Jianqing
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Xu Xinsheng
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Lim C.W.
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Chu Hongjie.DYNAMIC FLEXURE BUCKLING OF ELASTIC CYLINDRICAL SHELLS UNDER AXIAL IMPACT[J].chinese journal of theoretical and applied mechanics,2010,42(4):702. |
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| Authors: | Ma Jianqing Xu Xinsheng Lim CW Chu Hongjie |
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| Abstract: | In this paper, the dynamic buckling of elastic
cylindrical shells, which are impacted by axial load on one end, is studied.
By introducing Hamiltonian system to the problem, critical loads and
buckling modes are reduced to the problems of eigenvalues and
eigensolutions, respectively. In the system, symplectic eigensolutions are
grouped into two classes: the local compressive buckling and global flexure
buckling. Especially, when the impacted boundary is free, buckling modes
have special forms. Numerical results show some rules about the curves of
critical load and corresponding buckling modes. |
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