| 膜结构截面的离散变量优化方法 |
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| 引用本文： | 隋允康,王得天,叶红玲,杜家政.膜结构截面的离散变量优化方法[J].应用力学学报,2005,22(4):567-571. |
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| 作者姓名： | 隋允康 王得天 叶红玲 杜家政 |
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| 作者单位： | 北京工业大学,北京,100022 |
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| 基金项目： | 国家自然科学基金(10472003)，北京市自然科学基金(3042002)，北京市教委基金(KM200410005019)项目资助，美国MSC公司资助 |
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| 摘 要： | 通过将截面离散变量映射为连续变量的途径,建立了力学模型,在连续变量截面优化最优解附近构造两节模型,并采用两节无限小单元的无穷组合的方法和变量无量纲化技术对膜结构截面离散变量进行了优化。建立了多工况下具有尺寸和应力、位移约束的优化模型。同时,在MSC.Patran和MSC.Nastran上进行了二次开发。数值算例结果表明该理论的高效性和二次开发的可行性。
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| 关 键 词： | 离散变量 连续变量 两节模型 无量纲化技术 膜结构 |
| 文章编号： | 1000-4939（2005）04-0567-05 |
| 收稿时间： | 2004-11-22 |
| 修稿时间： | 2004-11-222005-05-22 |
Method for Sectional Optimization of Membrane Structure with Discrete Variables |
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| Sui Yunkang,Wang Detian,Ye Hongling,Du Jiazheng.Method for Sectional Optimization of Membrane Structure with Discrete Variables[J].Chinese Journal of Applied Mechanics,2005,22(4):567-571. |
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| Authors: | Sui Yunkang Wang Detian Ye Hongling Du Jiazheng |
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| Abstract: | The sectional optimization of membrane structure with discrete variables is investigated mapping the sectional discrete variables to continuous variables.A two-stage model is established near the optimal solution of sectional optimization of continuous variables,and the quite small element method associated with the dimensionless variable technique is adopted,then the optimized model with constraints of size stress and displacement under multi-loadings is obtained.The secondary exploitation of the special program on MSC.Patran and MSC.Nastran is carried out,the numerical examples demonstrate high efficiency of the method and feasibility of secondary development. |
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| Keywords: | discrete variables continuous variables two-stage model dimensionless technique membrane structure |
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