Minimizing the sound radiated by a cylindrical shell

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A cylindrical shell is optimized to reduce the sound it radiates. A finite-element model of a shell is created and coupled to an efficient boundary element model to estimate the total radiated sound power for a given harmonic excitation. The shell is harmonically excited at the center of a bulkhead located at the half-length of the shell. The element thicknesses are then altered using the GENESIS optimization software to minimize the sound power radiated by the cylinder. Two objective functions were used: namely surface velocity using the beta-method, and modal amplitude of structural-modes. Excellent sound power reduction was found for both cases.

Original languageEnglish (US)
Title of host publication38th International Congress and Exposition on Noise Control Engineering 2009, INTER-NOISE 2009
Pages4387-4394
Number of pages8
Volume7
StatePublished - 2009
Event38th International Congress and Exposition on Noise Control Engineering 2009, INTER-NOISE 2009 - Ottawa, ON, Canada
Duration: Aug 23 2009Aug 26 2009

Other

Other38th International Congress and Exposition on Noise Control Engineering 2009, INTER-NOISE 2009
CountryCanada
CityOttawa, ON
Period8/23/098/26/09

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics

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  • Cite this

    Shepherd, M. R., & Hambric, S. A. (2009). Minimizing the sound radiated by a cylindrical shell. In 38th International Congress and Exposition on Noise Control Engineering 2009, INTER-NOISE 2009 (Vol. 7, pp. 4387-4394)