| 空间杆系与叠层板组合结构的非线性稳定分析 |
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| 引用本文： | 杨琦,赵惠麟,宋启根.空间杆系与叠层板组合结构的非线性稳定分析[J].计算力学学报,1994,11(3). |
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| 作者姓名： | 杨琦 赵惠麟 宋启根 |
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| 作者单位： | 东南大学 |
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| 基金项目： | 国家自然科学基金与城乡建设科技发展基金 |
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| 摘 要： | 本文用非线性有限元法研究一种空间杆系与复合材料叠层板组合结构的非线性稳定问题。将杆系离散成空间梁柱单元，将复合材料叠层板离散成复合材料叠层板单元，并考虑了几何非线性和板的成层正交各向异性性质。为了获得较高的计算效率并顺利通过稳定临界点，求解非线性平衡方程采用了变增量步长和柱面弧长法迭代策略。在考证了程序的正确性之后，具体分析了几个工程模型，得出了于工程设计有益的结论。
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| 关 键 词： | 空间结构，叠层板，有限元法，非线性，稳定分析 |
Nonoinear stability analysis of space frame-laminate plate combined structures |
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| Yang Qi,Zhao Huilin,Song Qigen.Nonoinear stability analysis of space frame-laminate plate combined structures[J].Chinese Journal of Computational Mechanics,1994,11(3). |
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| Authors: | Yang Qi Zhao Huilin Song Qigen |
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| Abstract: | The nonlinear stability of the space frame-composite laminate plate combined structures is studied by nonlinear finite element method.The space frame is separated as space beam-column elements,the laminate plate is separated as composite laminate plate elements,geo-metric nonlinearity and the orthotropic property of the plate by layers are taking into ac-count.In the nonlinear analysis, the size of the load increment at the first iteration is con-trolled and the arc-length method is used in the iterations to traverse the limit point.Several examples are analysed and some conclusions that are useful for engineering design are ob-tained. |
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| Keywords: | space structure laminate finite element method nonlinear stability analysis |
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