Sound radiation in a half space with impedance surface

SARIGÜL A. S., SEÇGİN A., Ertunc S.

JOURNAL OF VIBRATION AND CONTROL, vol.20, no.16, pp.2552-2560, 2014 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 20 Issue: 16
  • Publication Date: 2014
  • Doi Number: 10.1177/1077546313487759
  • Journal Name: JOURNAL OF VIBRATION AND CONTROL
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.2552-2560
  • Keywords: Boundary element method, dilating sphere, half space, passive noise control, sound radiation, HELMHOLTZ INTEGRAL-EQUATION, ACOUSTIC-WAVES, SCATTERING, BODIES
  • Dokuz Eylül University Affiliated: Yes

Abstract

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.