境界要素法による自動車車室音場の解析 : 第1報, 剛境界を有する実物大石こうモデルの計算と実験

概要

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A method of analyzing the three dimensional sound field in real size car cabin is presented. The acoustical resonance frequency and the acoustical eigen-vector of a real size car cabin are calculated by the boundary element method (BEM), assuming the boundary condition to be a rigid wall. Then the resonance frequency and the eigen-vector of the real size car cabin model made of plaster are measured experimentally. The calculated results are compared with the experimental result. As for the resonance frequencies, the calculated results are in agreement with the measured one within about 3% error below 170 Hz. As for the eigen-vector and the frequency-response curve, the calculated result and experimental results are approximately the same. Through these studies, it is concluded that the present method is useful to analyze the sound field in real size car cabin with adequate accuracy when the boundary is rigid.
一般社団法人日本機械学会の論文
1989-01-25