| 环向加筋圆柱壳轴向弹塑性动力屈曲 |
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| 引用本文： | 江松青,李永池,王红五,陈正翔.环向加筋圆柱壳轴向弹塑性动力屈曲[J].振动与冲击,2001,20(4):81-85,74. |
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| 作者姓名： | 江松青 李永池 王红五 陈正翔 |
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| 作者单位： | 1. 中国科学技术大学力学与机械工程系,合肥,230026
2. 上海交通大学船舶及海洋工程学院,上海,200030 |
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| 基金项目： | 本文得到自然科学基金项目资助(19802017) |
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| 摘 要： | 基于“离散加筋”模型，考虑了大挠度和材料硬化应变率敏感特性的影响，借助增量数值解法研究了环向加筋圆柱壳在轴向流－固冲击载荷作用下的弹塑性动力屈曲。分别采用类似B－R准则和Southwell方法来确定结构动力屈曲临界载荷。讨论了加强筋、材料硬化应变率敏感特性等因素对结构动力屈曲性态和临界载荷的影响。
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| 关 键 词： | 环向加筋圆柱壳 轴向弹塑性动力屈曲 临界载荷 材料硬化应变率敏感特性 冲击载荷 |
Axial Elastic-plastic Dynamic Buckling of Ring-Stiffened Cylindrical Shells |
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| Jiang Songqing,Li Yongchi,Wang Hongwu.Axial Elastic-plastic Dynamic Buckling of Ring-Stiffened Cylindrical Shells[J].Journal of Vibration and Shock,2001,20(4):81-85,74. |
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| Authors: | Jiang Songqing Li Yongchi Wang Hongwu |
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| Abstract: | An increment numerical method is used to analyze the elastic_plastic dynamic buckling of ring_stiffened cylindrical shells under axial fluid_solid impact loading on the basis of discrete stiffeners model,and taking account of large deflections and strain_rate sensitive yielding material properties.The similar B_R criterion and the Southwell method are applied to determinate the emergence of buckling.The effects of ring_stiffeners and strain_rate sensitive yielding material properties on dynamic buckling characteristics and critical loads of cylindrical shells are discussed. |
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| Keywords: | ring_stiffened cylindrical shells elastic_plastic dynamic buckling critical loads strain_rate sensitive yielding material properties |
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