基于Nastran优化的某导弹结构模型修正  

Missile Structure Model Updating Based on Nastran Optimization

作　　者：刘荣贺[1] 姜虹[2] 于开平[1] 刘珂[1] 

机构地区：[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

出　　处：《现代防御技术》2011年第6期106-110,共5页Modern Defence Technology

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。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.

关 键 词：有限元 优化 灵敏度分析 模型修正 

分 类 号：TJ760.3[兵器科学与技术—武器系统与运用工程] TP391.9[自动化与计算机技术—计算机应用技术]