| 两参数轴向冲击载荷作用下圆柱壳弹塑性动力屈曲 |
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| 引用本文： | 顾王明,刘土光,唐文勇,郑际嘉. 两参数轴向冲击载荷作用下圆柱壳弹塑性动力屈曲[J]. 力学学报, 1995, 27(1): 48-57. DOI: 10.6052/0459-1879-1995-1-1995-404 |
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| 作者姓名： | 顾王明 刘土光 唐文勇 郑际嘉 |
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| 作者单位： | 华中理工大学船舶与海洋工程系 |
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| 摘 要： | 研究圆柱壳在两参数轴向冲击载荷下的弹塑性动力屈曲问题，基本控制方程由弹塑性连续介质中关于加速度的最小原理获得，本构关系采用增量理论。研究表明：屈曲过程可划分为两相，两相之间由临界时间ｔ表征，并分别讨论了应力波对屈曲的影响，压缩波与弯曲波的相互作用及几何尺寸，材料参数，初始缺陷，载荷峰值及持续时间等诸多因素与动力屈曲的关系。
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| 关 键 词： | 圆柱壳 弹塑性 动力屈曲 冲击载荷 |
DYNAMIC BUCKLING OF ELASTIC-PLASTIC CYLINDRICAL SHELLS UNDER AXIAL TWO PARAMETERS IMPULSIVE LOADING |
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| Guwangming,LiuTuguang,Tangwenyong,ZhengJijia. DYNAMIC BUCKLING OF ELASTIC-PLASTIC CYLINDRICAL SHELLS UNDER AXIAL TWO PARAMETERS IMPULSIVE LOADING[J]. chinese journal of theoretical and applied mechanics, 1995, 27(1): 48-57. DOI: 10.6052/0459-1879-1995-1-1995-404 |
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| Authors: | Guwangming LiuTuguang Tangwenyong ZhengJijia |
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| Abstract: | The inelastic dynamic buckling of cylindrical shells under axial two parametersimpulsive loading is discussed. The basic equations of structure are derived from a minimumprinciple in dynamics of elastic-plastic continua at finite deformation and the flow theoryof plasticity is employed. Two phases(a pre-critical and post-critical phase)can be distin-guished at an early stage of dynamic buckling of inelastic shell.The effects of peak valueand during time of loading, initial imperfections, geometric dimensions, materiai parame-ters, compression and bend wave to the dynamic buckling behaviour of cylindrical shellsunder axial two parameters loading are discussed. |
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| Keywords: | impulsive cylindrical shell elastic-plastic dynamic buckling |
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