| 组合结构屈曲稳定性优化设计与灵敏度分析 |
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| 引用本文： | 顾元宪,赵国忠,张洪武,亢战,李云鹏.组合结构屈曲稳定性优化设计与灵敏度分析[J].宇航学报,2000,21(3):127-132. |
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| 作者姓名： | 顾元宪 赵国忠 张洪武 亢战 李云鹏 |
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| 作者单位： | 大连理工大学工业装备结构分析国家重点实验室工程力学系 大连 116024 |
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| 基金项目： | 国家杰出青年科学基金(19525206)和国家自然科学基金重大项目(59895410)资助 |
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| 摘 要： | 本文研究了组合结构屈曲稳定性优化设计及灵敏度分析数值方法，讨论了屈曲临界荷载灵敏度对应力场和载荷的依赖关系、及其在尺寸和形状变量中的不同计算方法，将屈曲优化与静力和动力优化联合执行，在ＪＩＦＥＸ软件中实现以解决复杂的结构优化问题。算例表明了优化方法在结构稳定性设计中的应用，验证了算法和程序的有效性。
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| 关 键 词： | 屈曲稳定性 灵敏度分析 组合结构 优化设计 |
| 修稿时间： | 1998年11月2日 |
OPTIMUM DESIGN AND SENSITIVITY ANALYSIS FOR BUCKING STABILITY OF COMPLEX BUILT-UP STRUCTURES |
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| Gu Yuanxian\ Zhao Guozhong\ Zhang Hongwu\ Kang Zhan\ Li Yunpeng.OPTIMUM DESIGN AND SENSITIVITY ANALYSIS FOR BUCKING STABILITY OF COMPLEX BUILT-UP STRUCTURES[J].Journal of Astronautics,2000,21(3):127-132. |
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| Authors: | Gu Yuanxian\ Zhao Guozhong\ Zhang Hongwu\ Kang Zhan\ Li Yunpeng |
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| Abstract: | The paper studies numerical methods of design optimization on structural buckling stability and sensitivity analysis.The dependence of the buckling load sensivivities on the stress field and external loads is discussed,and different calculation methods for the size and shape variables are proposed.The buckling optimization is combined with the static and dynamic optimizations.The methods are implemented in JIFEX software to deal with complicated problems of structural optimization.Numerical examples are given to demonstrate the applications of buckling design optimization,and the effectiveness of methods and program of this paper. |
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| Keywords: | Structural optimization\ Buckling stability\ Sensitivity analysis\ Shape design variable |
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