摘要
基于灵敏度分析技术与优化设计技术,提出导弹模态参数修正的新方法。首先提出模型修正的新方法,给出某型导弹的有限元模型,计算其模态后,发现计算结果与实验辨识结果相差较大。选定需修正的材料参数,建立导弹结构的灵敏度分析模型和Matlab优化设计模型。最后,运用给出的模型修正方法对结构进行模态参数修正。结果表明,修正模型的计算模态与实验值吻合较好,验证了模型修正方法。
Based on the sensitivity analysis and optimization design technology, a new model updating method for rocket is put forward. Firstly, the new method for model updating is presented, and a FEM model for rocket is established subsequently. It is found through mode calculation that the simulation result of the modes is different from the experimental result. Then, the sensitivity analysis model and the optimization design model based on Matlab are established after the parameters to be updated are selected. Finally, the model is updated by the new method. The result suggests that the mode simulation results of the updated model fit well with the experimental value, which validates the model updating method.
出处
《导弹与航天运载技术》
北大核心
2013年第1期49-52,共4页
Missiles and Space Vehicles
关键词
振动
模态
灵敏度分析
优化设计
模型修正
Vibration
Mode
Sensitivity analysis
Optimization
Model updating
