Optimal design of an acoustic enclosure for minimal broadband sound radiation

Dongjai Lee, Gary H. Kooprnann, Ashok D. Belegundu

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

1 Scopus citations

Abstract

Reducing unwanted noise radiating from a vibrating structure continues to be a major challenge in engineering design. In this paper, high impedance structures characterized with uniquely identifiable resonance modes are considered for sound power reduction using an enclosing surface. An optimization strategy for the thin enclosure design is presented. A close-fitting and equipment-mounted enclosure is attached to the vibrating structure with translational springs. To model the coupled system, a new compact and symmetric system matrix analysis using component modal synthesis and fluid displacement potential to deal with the coupled system is developed. This leads to a new application of optimization to the coupled system to reduce the radiated sound power. Numerical optimizations are performed for a plate enclosure. It is shown that large reductions in radiated sound power are possible with optimally positioned and rated attachment springs.

Original languageEnglish (US)
Title of host publicationAmerican Society of Mechanical Engineers, Noise Control and Acoustics Division (Publication) NCA
Pages61-70
Number of pages10
DOIs
StatePublished - Dec 1 2005
Event2005 ASME International Mechanical Engineering Congress and Exposition, IMECE 2005 - Orlando, FL, United States
Duration: Nov 5 2005Nov 11 2005

Publication series

NameAmerican Society of Mechanical Engineers, Noise Control and Acoustics Division (Publication) NCA
Volume32 NCA

Other

Other2005 ASME International Mechanical Engineering Congress and Exposition, IMECE 2005
CountryUnited States
CityOrlando, FL
Period11/5/0511/11/05

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Acoustics and Ultrasonics

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  • Cite this

    Lee, D., Kooprnann, G. H., & Belegundu, A. D. (2005). Optimal design of an acoustic enclosure for minimal broadband sound radiation. In American Society of Mechanical Engineers, Noise Control and Acoustics Division (Publication) NCA (pp. 61-70). (American Society of Mechanical Engineers, Noise Control and Acoustics Division (Publication) NCA; Vol. 32 NCA). https://doi.org/10.1115/IMECE2005-82943