| 基于响应面模型的结构疲劳寿命优化方法 |
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| 引用本文： | 薛彩军,谭伟,徐奋进,戴建华.基于响应面模型的结构疲劳寿命优化方法[J].南京理工大学学报(自然科学版),2011,35(6). |
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| 作者姓名： | 薛彩军 谭伟 徐奋进 戴建华 |
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| 作者单位： | 南京航空航天大学飞行器先进设计技术国防重点学科实验室,江苏南京,210016 |
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| 摘 要： | 针对基于疲劳寿命的结构优化耗时长的缺点,该文将抗疲劳设计方法和优化技术相结合,研究一种基于响应面模型的结构疲劳寿命优化方法.以飞机起落架为研究对象,采用动力学仿真获得子结构疲劳寿命分析的载荷谱.以拉丁超立方试验设计方法建立了疲劳寿命的二次响应面模型,实现了某型飞机起落架前撑杆结构疲劳寿命优化设计,使其疲劳寿命提高了5.4倍.优化结果验证了方法的有效性.
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| 关 键 词： | 响应面模型 疲劳寿命 结构优化 动力学仿真 飞机起落架 |
Structural Fatigue Life Optimization Method Based on Response Surface Model |
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| XUE Cai-jun
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TAN Wei
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XU Fen-jin
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DAI Jian-hua.Structural Fatigue Life Optimization Method Based on Response Surface Model[J].Journal of Nanjing University of Science and Technology(Nature Science),2011,35(6). |
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| Authors: | XUE Cai-jun TAN Wei XU Fen-jin DAI Jian-hua |
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| Institution: | XUE Cai-jun,TAN Wei,XU Fen-jin,DAI Jian-hua(Key Laboratory of Fundamental Science for National Defense-advanced Design Technology of Flight Vehicle,Nanjing University of Aeronautics & Astronautics,Nanjing 210016,China) |
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| Abstract: | Aiming at the shortcoming of time-consuming for the structural optimization based on fatigue life,anti-fatigue design method and optimization technology are combined for presenting a structural fatigue life optimization method based on a response surface model.Considering a landing gear ' s structural design,a load spectrum of substructure fatigue life analysis is obtained by dynamic simulation.The quadratic response surface models of fatigue life are established based on the design method of latin hypercub... |
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| Keywords: | response surface models fatigue life structural optimization dynamic simulation landing gears |
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