構造-音場連成系の直接周波数応答感度解析手法の開発

概要

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The first report by the authors presented an analytical method for determining the sensitivities of eigen-value and eigenvector of coupled acoustic-structural systems. As a continuation of the previous work, this paper deals with an investigation into the derict frequency response and their sensitivity. First, if one tries to determine the direct frequency response using a conventional analytical technique for the coupled system, it results in very poor calculation efficiency. So, an iteration method is proposed here which does not employ an inverse matrix (or triangular resolution) of the impedance matrix of the coupled system. Then, an algorithm will be derived for calculating the corresponding frequency response sensitivity. It will be demonstrated that the use of this algorithm greatly reduces the calculation volume and makes it possible to determine the frequency response and sensitivity with good accuracy. The validity of the proposed method will be verified by applying it to a coupled acoustic-box structural system.
社団法人日本機械学会の論文
1991-03-25