Sound radiation in a half space with impedance surface

作者：Sarigul A Saide^*; Secgin Abdullah; Ertunc Sinan

来源：Journal of Vibration and Control, 2014, 20(16): 2552-2560.

DOI：10.1177/1077546313487759

• Boundary element method
• dilating sphere
• half space
• passive noise control
• sound radiation

This study deals with sound radiation of a vibrating body in a half space. Half space may be formed by a rigid, anechoic or specifically by an impedance surface. The practical application of the impedance surface may be the sound field determination of a machine sitting on a floor, coated with an isolation material, for passive noise control. The study is based on the solution of Helmholtz integral equation by the boundary element method (BEM). A BEM code developed for general vibro-acoustic applications is used for numerical solutions. Examples include sound sources taken from theory and daily life. Some benchmark studies and real life applications are involved.

• 出版日期2014-12