境界要素法による自動車車室音場の解析 : 第2報, 吸音壁境界を有する実物大石膏モデルの解析と実験

概要

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A method of analyzing the three dimensional sound field in a real size car cabin with sound absorbing materials is presented. The acoustical resonance frequency and the acoustical eigen-vector of a real size car cabin with absorbing materials are calculated using the boundary element method (BEM), assuming the boundary condition to be an impedance wall. Then the resonance frequency and the eigen-vector of the real size car cabin model made of plaster with absorbing material are measured experimentally. The calculated results are compared with the experimental results. The calculated resonance frequency and the loss factor at that frequency are approximately the same as the experimental one. Through these studies, it is concluded that the present method is useful in analyzing the sound field of real car cabin with absorbing materials.
一般社団法人日本機械学会の論文
1989-01-25