構造・音響連成系の実験解析と理論的考察 : 一端で弾性パネルと連成する音響管の場合(機械力学,計測,自動制御)

概要

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To study the sound field of a structural-acoustic coupling system, numerical analysis techniques are often used. But numerical analysis techniques are not fit to clarify systematically the features of the sound field. In this paper, an attempt is made to clarify systematically the features of the sound field in a rectangular parallelepiped with a flexible panel at one end. First, experimental study is conducted using an experimental model. Its eigenfrequencies, mode shapes are measured, and features of the sound field are discussed. It is found that in the response curve there is a fixed point, which is unaltered by a modification of the structure. Secondly, theoretical study is made using a one-dimensional mathematical model. It is found that this model can explain all the features obtained experimentally.
一般社団法人日本機械学会の論文
2003-09-25