摘要
提出了整体频响函数的新概念（ＧＦＲＦ）．以振型平方和的形式对全部频响函数进行加权组合，建立了多输入多输出模态参数的识别模型。仿真验算的分析结果表明，该方法具有精度高，一致性好，能分离密集模态和消除随机噪声等优点，可以应用于大型复杂结构的试验模态分析。
A concept of global frequency response function(GFRF) has been presented.The MIMO modal parameter identification modal has been established,based on the weighting sum of modal shape squares.The analytical results of artificial example show that the proposed method has the advantages of accuracy,consistency,separating closely-spaced modes and eliminating random noise.This method can be used for experimental modal analysis of large or complicated structure.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
1994年第6期561-566,共6页
Journal of University of Science and Technology Beijing
关键词
模态参数
模式识别
平方振型加权
modal parameter
identification
test modal analysis
