| 板壳结构弹塑性稳定性的有限元分析 |
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| 引用本文： | 吴连元,胡刚义.板壳结构弹塑性稳定性的有限元分析[J].应用力学学报,1993,10(1):106-110. |
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| 作者姓名： | 吴连元 胡刚义 |
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| 作者单位： | 上海交通大学，上海交通大学 上海 200030，上海 200030 |
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| 摘 要： | 构造了20参数圆柱壳拟协调单元,同时采用分层模型的弹塑性稳定性分析.根据塑性屈曲的Stowell形变理论,用基于切线刚度矩阵的增量法和修正的Newton-Raphson方法,计算屈曲前的弹塑性内力分布,并用逆幂迭代法求解弹塑性屈曲荷载.
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| 关 键 词： | 弹塑性 屈曲 圆柱壳 结构力学 |
A Finite Element Method for the Plastic Buckling Analysis of Plates and Shells |
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| Wu Lianyuan Hu Gangyi.A Finite Element Method for the Plastic Buckling Analysis of Plates and Shells[J].Chinese Journal of Applied Mechanics,1993,10(1):106-110. |
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| Authors: | Wu Lianyuan Hu Gangyi |
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| Institution: | Shanghai Jiaotong University |
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| Abstract: | A quasi-conforming element is developed in this paper. A layer model is introduced to shell elasto-plastic buckling analysis. Both the incremental method with the tangent stiffness and modified Newton-Raphson method are used to compute the pre-buckling stress distribution in elastic and plasti ranges. A bifurcation analysis is preformed by using Stowell' s deformation theory. |
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| Keywords: | plate and shell structures elasto-plastic buckling quasi-conforming element |
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