感度解析を用いた構造物の同定法の検討 : 第2報,周波数応答特性の同定

概要

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Our first report described a method in which eigenpairs measured through experiments are used to modify stiffness matrices derived from FEM analysis. We conducted the identification analysis by combining sensitivity and optimum analysis techniques. The "Simultaneous Iteration Sensitivity Method" developed by one of the authors was found to be most effective in such an identification. In this report, we attempt to identify design variables with frequency response. We begin this process by identifying the design variables eigenmodes within a significant frequency range. Then, we identify the modified design variables with the frequency response of a significant structural point. We demonstrate that a correct identification can be obtained through this process and the residual compliance matrix can be acquired through experiments which has been very difficult to accomplish previously. The effectiveness of the eigenmode sensitivity analysis method used in this study. that is, "The Simultaneous Iteration Sensitivity Method", was increased by calculating the triangular decompostion of the changed structure using that of the present structure.
一般社団法人日本機械学会の論文
1988-09-25