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| 基于敏度阈值拓扑优化方法在飞机加强框设计中的应用 | |
| 引用本文： | 邓扬晨,李学军,朱继宏,陈华.基于敏度阈值拓扑优化方法在飞机加强框设计中的应用[J].力学与实践,2005,27(4):26-31. |
| 作者姓名： | 邓扬晨 李学军 朱继宏 陈华 |
| 作者单位： | 1. 沈阳飞机设计研究所一部,沈阳,110035;西北工业大学机电工程学院,西安,710072 2. 南方航空股份公司北方分公司飞行部,沈阳,110043 3. 西北工业大学机电工程学院,西安,710072 |
| 基金项目： | 航空科学基金（03853003）和辽宁省博士科研启动、自然科学基金航空科学技术专项（20044007）共同资助. |
| 摘 要： | 为了能够有效地降低飞机结构承力件的重量，针对飞机骨架，以加强框的概念设计为研究内容，通过对“敏度阈值”概念的分析，指出其不足，提出了“改进的敏度阈值”概念，并与“约束补偿”策略结合而形成新的拓扑优化算法，用于加强框的材料布局设计．多个算例中的拓扑优化结果均显示其结构型式十分新颖，值得深入地探讨． |
| 关 键 词： | 敏度阈值 拓扑优化 飞机加强框 约束补偿 弹舱设计 |
| 收稿时间： | 2004-08-20 |
| 修稿时间： | 2005-01-19 |
AN APPLICATION OF GRADIENT VARIABLE-THRESHOLD TOPOLOGY OPTIMIZATION IN AIRCRAFT STRENGTHENING FRAME DESIGN |
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| Deng Yangchen,Li Xuejun,ZHU Jihong,CHEN Hua.AN APPLICATION OF GRADIENT VARIABLE-THRESHOLD TOPOLOGY OPTIMIZATION IN AIRCRAFT STRENGTHENING FRAME DESIGN[J].Mechanics and Engineering,2005,27(4):26-31. | |
| Authors: | Deng Yangchen Li Xuejun ZHU Jihong CHEN Hua |
| Abstract: | In order to reduce the weight of aircraft structures effectively, the skeleton of aircraft is treated in the conceptual design of strengthening frame. By analyzing the concept of 'gradient threshold' and pointing out its weakness, the author proposes the concept of 'modified gradient threshold' and combines it with the strategy of 'constraint compensation' to form a new kind of topology optimization algorithm for structural layout of a strengthening frame. The topology optimization results of several examples show that their layouts are good. We can see that, using the combination of CAD/CAE and topology optimization for aircraft strengthening frame conceptual design is feasible and that the proposed 'modified gradient threshold' topology optimization algorithm is effective. |
| Keywords: | aircraft strengthen frame conceptual design topology optimization gradient variable-threshold constraint compensation |
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