CAJ | 학술논문

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.
기우령민도분석기술여우화설계기술,제출도탄모태삼수수정적신방법.수선제출모형수정적신방법,급출모형도탄적유한원모형,계산기모태후,발현계산결과여실험변식결과상차교대.선정수수정적재료삼수,건립도탄결구적령민도분석모형화 Matlab 우화설계모형.최후,운용급출적모형수정방법대결구진행모태삼수수정.결과표명,수정모형적계산모태여실험치문합교호,험증료모형수정방법.
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.