| 板壳结构屈曲分析的非线性有限元法 |
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| 引用本文： | 杨娜,沈世钊. 板壳结构屈曲分析的非线性有限元法[J]. 哈尔滨工业大学学报, 2003, 35(3): 338-341 |
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| 作者姓名： | 杨娜 沈世钊 |
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| 作者单位： | 1. 哈尔滨工业大学,土木工程学院,黑龙江,哈尔滨,150090;北方交通大学,土建学院,北京,100044
2. 哈尔滨工业大学,土木工程学院,黑龙江,哈尔滨,150090 |
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| 摘 要： | 为进行板壳结构的屈曲分析。采用三维退化曲壳元离散板壳结构，在TL列式下了考虑双重非线性的单元切线刚度矩阵，提出采用罚单元法处理结构加载边的位移的约束条件。应用所编制的程序，进行了平板、曲壳以及板式门架的双重非线性屈曲分析。对比分析表明了方法的可靠性和有效性。
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| 关 键 词： | 三维退化曲壳元 板壳结构 物理非线性 几何非线性 罚单元 屈曲分析 |
| 文章编号： | 0367-6234(2003)03-0338-04 |
| 修稿时间： | 2001-05-08 |
Finite element analysis for nonlinear buckling of plates and shells |
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| YANG Na , SHEN Shi zhao. Finite element analysis for nonlinear buckling of plates and shells[J]. Journal of Harbin Institute of Technology, 2003, 35(3): 338-341 |
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| Authors: | YANG Na SHEN Shi zhao |
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| Affiliation: | YANG Na 1,2 SHEN Shi zhao 1 |
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| Abstract: | The plates and shells are discreted by degenerated shell element with nine nodes and the buckling property and analyzed for element tangent stiffness matrix with consideration accorded material nonlinearity and geometrical nonlinearity. A penalty element is adopted to consider displacement restraint condition of loading boundary. Using the correlative program, buckling analysis was made with plates, shells and portal frame made of plates. The comparison indicates that the present theory and the suggested method has great accuracy and reliability. |
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| Keywords: | degenerated shell element plates and shells material nonlinearity geometrical nonlinearity penalty element buckling analysis |
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