| 基于Nastran优化的某导弹结构模型修正 |
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| 引用本文： | 刘荣贺,姜虹,于开平,刘珂.基于Nastran优化的某导弹结构模型修正[J].现代防御技术,2011,39(6):106-110. |
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| 作者姓名： | 刘荣贺 姜虹 于开平 刘珂 |
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| 作者单位： | 1. 哈尔滨工业大学航天工程与力学系,黑龙江哈尔滨,150001
2. 北京电子工程总体研究所,北京,100854 |
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| 摘 要： | 为了对某型号导弹结构建立合理的有限元全弹模型,基于Nastran的灵敏度分析及优化功能,首先对初始导弹模型设计参数进行了灵敏度分析,并确定优化设计的设计变量,然后以模态试验结果为优化目标,对其进行动力学优化,得到修正模型.结果表明,修正后模型的计算结果与试验结果偏差有很大程度的改进,符合了工程的使用需要.
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| 关 键 词： | 有限元 优化 灵敏度分析 模型修正 |
Missile Structure Model Updating Based on Nastran Optimization |
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| LIU Rong-he
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JIANG Hong
,
YU Kai-ping
,
LIU Ke.Missile Structure Model Updating Based on Nastran Optimization[J].Modern Defence Technology,2011,39(6):106-110. |
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| Authors: | LIU Rong-he JIANG Hong YU Kai-ping LIU Ke |
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| Institution: | 1 (1.Harbin Institute of Technology,Department of Astronautical Science and Mechanics,Heilongjiang Harbin 150001,China; 2.Beijing Inst,of Electronic System Enginnering,Beijing 100854,China) |
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| Abstract: | To establish an accurate finite element(FE) model of a type missile structure,an optimized method based on the sensitivity analysis and optimized design of Nastran is provided here.Firstly, the sensitivity analysis of the initial missile model is made,and then the design variables are optimized. Vibration test data are taken as optimized object to optimize the FE model of the missile structure and obtain the updated model.Results show that the deviation between modified model results and those of experiments are improved greatly,meeting the engineering practical demand. |
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| Keywords: | finite element optimization sensitivity analysis model updating |
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