NDLI: Optimal Design of an Acoustic Enclosure for Minimal Broadband Sound Radiation

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Lee, Dongjai Gary, H. Koopmann Ashok, D. Belegundu
Copyright Year	2005
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.
Sponsorship	Noise Control and Acoustics Division
Starting Page	61
Ending Page	70
Page Count	10
File Format	PDF
ISBN	0791842258
DOI	10.1115/IMECE2005-82943
e-ISBN	0791837696
Volume Number	Noise Control and Acoustics
Conference Proceedings	ASME 2005 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2005-11-05
Publisher Place	Orlando, Florida, USA
Access Restriction	Subscribed
Subject Keyword	Design Engineering design Noise (sound) Fittings Fluids Acoustics Sound Resonance Springs Optimization Displacement
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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