モード特性による特性行列算出の一手法

概要

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In this paper, the authors propose a new method for identifying a set of spatial matrices of a test structure from its modal parameters experimentally estimated in advance. The algorithm of the method is based on the mathematical relationship between a set of spatial matrices and frequency response functions (FRFs in brief). An appropriate set of spatial matrices can be determined without mathematical iterations. The algorithm is explained. The basic validity of the method is demonstrated with an actual frame structure. The FRFs of the specimen under single input and multiple output condition are obtained by hammering testing. Using the FRFs, the method identifies a set of spatial matrices that can predict FRFs between any two measurement points with practically acceptable accuracy.
一般社団法人日本機械学会の論文
2001-03-25