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Numerical Assessment of Optimal Equipment Allocation and Close-Fitting Acoustical Hoods Within a Multi-Noise Plant Using an Artificial Immune Method

Published online by Cambridge University Press:  20 December 2012

M.-C. Chiu
M.-C. Chiu*
Affiliation:
Department of Mechanical and Automation Engineering, Chung Chou University of Science and Technology Changhua, Taiwan 51003, R.O.C.
*
Corresponding author (minchie.chiu@msa.hinet.net)
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Abstract

High noise levels in a multi-noise plant can be harmful to workers and can lead to both psychological and physiological problems. Consequently, noise control work on equipment such as acoustic hoods becomes vital. However, research work of shape optimization on space-constrained close-fitting acoustic hoods has been neglected.

In this paper, a sound insertion loss used for evaluating the acoustic performance of an acoustical hood will be adopted. A numerical case for depressing the noise levels at the receiving points along the boundary of three kinds of multi-equipment plants by optimally designing a shaped one-layer close-fitting acoustic hood and reallocating the equipment within a constrained space will also be introduced. Moreover, an artificial immune method (AIM) is adopted and coupled with the equations of sound attenuation and minimal variation square in conjunction with a twelve-point monitoring system.

Consequently, this paper provides a quick and effective method for reducing the noise impact around a plant by optimally designing a shaped one-layer close-fitting acoustic hood and reallocating equipment within the AIM searching technique.

Keywords

Multi-noise plantClose-fitting acoustical hoodArtificial immune method
Type
Articles
Information
Journal of Mechanics , Volume 29 , Issue 1 , March 2013 , pp. 185 - 195
Copyright
Copyright © The Society of Theoretical and Applied Mechanics, R.O.C. 2012

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