摘要
应用相关性分析后试验测量所得的位移频响函数对动力学分析模型的刚度矩阵、质量矩阵、阻尼系数进行修正,使修正后分析模型的频响函数与试验测量所得的相一致。该法不仅修正了动力学分析模型频响函数的峰值响应,还很好地修正了分析模型的固有频率,使得修正后模型峰值响应处的频率与试验测量所得的峰值响应处的频率相一致。该法具有明确的物理意义,数值算例表明,此法方便可行,修正结果精确,工程实际意义较强。
By use of the displacement frequency response functions extracted from vibration test data, this paper updates dynamic characteristics of analytical model such as stiffness matrix, mass matrix and damp matrix to make the displacement frequency response functions coincide with those measured. This method not only improves analytical model＇ s displacement frequency response functions, but also updates its natural frequency to meet those accurate. The method has definite physical meaning, and numerical example indicates that the method is handy and the results are accurate, which is fit for solving some practical problems.
出处
《宇航学报》
EI
CAS
CSCD
北大核心
2006年第2期201-204,共4页
Journal of Astronautics
基金
"十一五"预先研究课题资助
关键词
动力学
位移
频响函数
模型修正
Dynamic
Displacement
Frequency response function
Model improvement
