相反原理に基づく車両放射音の解析手法 : 第2報, 音響伝達関数に対する車体パネルの寄与度測定法について

概要

論文の詳細を見る
One characteristic of a fully trimmed vehicle is that the properties of the acoustic field around the noise sources have approximately the same level of complexity as those of the acoustic field in the cabin. Another characteristic is that the partitions between the noise sources and the interior have double-wall structures consisting of interior trim and metal panels covered with damping materials. We present a method that combines direct and reciprocal measurements to determine the respective contributions of the metal panels and interior trim to the acoustic transfer functions between the noise source surfaces and the driver's ear position. We then explain how an analysis of the contribution of the metal panels to engine noise and transmission noise in a fully trimmed vehicle can be useful in achieving substantial noise reduction.
社団法人日本機械学会の論文
1997-03-25