摘要
结构体振动与其辐射的噪声之间存在着一种定量关系．本文从自由场结构体声辐射的理论公式──自由场Ｈｅｌｍｈｏｌｔｚ积分方程入手，然后采用边界元法（ＢＥＭ）离散积分方程，通过任意形状结构体表面弹性振动的速度场，来计算其向外辐射的声场，从而达到有效地预测其声场特性的目的．
There is a certain connection between vibration and radiation noise of a body. Inthis paper,the Helmholtz integral equation,which is the theoretical formula of acoustic radiation of the body,is discretized with boundary element method and the exterior acoustic radiation field is calculated for a given specified surface elastic vibration velocity of an arbitrarilyshaped body. so as to effectively predict the characteristics of the acoustic field of the body
出处
《声学学报》
EI
CSCD
北大核心
1994年第1期22-31,共10页
Acta Acustica
关键词
结构振动
自由场
声辐射
声场
Acoustic emissions
Acoustic properties
Acoustic waves
Boundary element method
Numerical analysis
