140 数値モデルに基づく高性能防音壁の開発(オーガナイズドセッション : O.S.6 交通騒音/振動の制御(自動車・鉄道・航空機III))

概要

論文の詳細を見る
This paper describes a high performance noise barrier is developed using numerical model by boundary element analysis. First, acoustic impedance on a noise barrier is investigated by ordinary standing wave method and new method, which is connected on the noise barrier with impedance tube. Next, new structure of noise barrier is developed based on contribution of each side of sound absorption coefficient. Moreover, a simple experiment using a part of the noise barrier in anechoic room instead of field experiment is proposed for easy verification experimentally. Insertion loss of the high performance noise barrier is correlated by the simple experiment and numerical analysis using measured acoustic impedance and virtual sound source.
一般社団法人日本機械学会の論文
2001-06-05