Harmonic radiation from a liquid-filled spherical acoustic lens with an internal eccentric spherical source

Seyyed M. Hasheminejad*, Mahdi Azarpeyvand

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

1 Citation (Scopus)

Abstract

Radiation of sound from a modally vibrating shell-encapsulated (eccentric) spherical source is analyzed in an exact manner using the classical method of separation of variables. The proposed model is a realistic idealization of a spherical acoustic lens with focal point inside the lens when used as a sound projector. The analytical results are illustrated with a numerical example in which the modal acoustic radiation impedance load on the source and the radiated far-field pressure are evaluated for representative values of the parameters characterizing the system. Numerical results clearly illustrate that in addition to frequency, surface velocity distribution and eccentricity of the source, the dynamic interaction of the encapsulating shell can be of great consequence in sound radiation.

Original languageEnglish
Pages (from-to)493-506
Number of pages14
JournalMechanics Research Communications
Volume31
Issue number4
DOIs
Publication statusPublished - 1 Jul 2004

Keywords

  • Acoustic lens
  • Sound radiation
  • Spherical source

Fingerprint Dive into the research topics of 'Harmonic radiation from a liquid-filled spherical acoustic lens with an internal eccentric spherical source'. Together they form a unique fingerprint.

Cite this