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Noise pollution reduction through a novel optimization procedure in passive control methods

Lian, Haojie, Chen, Leilei, Lin, Xiao, Zhao, Wenchang, Bordas, Stephane P. A. and Zhou, Mingdong 2022. Noise pollution reduction through a novel optimization procedure in passive control methods. Computer Modeling in Engineering & Sciences 131 (1) , pp. 1-18. 10.32604/cmes.2022.019705

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Abstract

This paper proposes a novel optimization framework in passive control techniques to reduce noise pollution. The geometries of the structures are represented by Catmull-Clark subdivision surfaces, which are able to build gap-free Computer-Aided Design models and meanwhile tackle the extraordinary points that are commonly encountered in geometric modelling. The acoustic fields are simulated using the isogeometric boundary element method, and a density-based topology optimization is conducted to optimize distribution of sound-absorbing materials adhered to structural surfaces. The approach enables one to perform acoustic optimization from Computer-Aided Design models directly without needing meshing and volume parameterization, thereby avoiding the geometric errors and time-consuming preprocessing steps in conventional simulation and optimization methods. The effectiveness of the present method is demonstrated by three dimensional numerical examples.

Item Type: Article
Date Type: Published Online
Status: Published
Schools: Engineering
Additional Information: This work is licensed under a Creative Commons Attribution 4.0 International License
Publisher: Tech Science Press
ISSN: 1526-1506
Date of First Compliant Deposit: 16 March 2022
Date of Acceptance: 2 November 2021
Last Modified: 03 Aug 2022 01:24
URI: https://orca.cardiff.ac.uk/id/eprint/148148

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