摘要
基于传统的分布动载荷时域识别理论,提出了一种基于固有振型的复杂结构分布动载荷时域识别技术。传统的分布动载荷识别是基于正交多项式理论,在对非正规结构件应用时,需要进行模型坐标映射。基于固有振型的复杂结构分布动载荷识别可以避开模型坐标映射。最后经过有限元仿真实验,验证了此方法的正确性。
Improved load identification for the complicated structures is presented, which is based on the traditional identification of distributional dynamic load in time domain. The traditional way based on the orthogonal polynomial, however, is too difficult to the step of model coordinates mapping for the complex structures. The new method of distributional dynamic load identification with the mode shape polynomial will avoid the step above. The simulation experiment has proved the correctness of this study.
出处
《振动．测试与诊断》
EI
CSCD
北大核心
2012年第4期581-585,688,共5页
Journal of Vibration,Measurement & Diagnosis
基金
中央高校基本科研业务费专项资金资助项目(编号:NS2012080)
南京航空航天大学引进人才科研启动经费资助项目(编号:1001-YAH10033)
关键词
载荷识别
正交多项式
振型多项式
时域方法
load identification, orthogonal polynomial, mode shape polynomial, time domain method
