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Accurate and Efficient Prediction of Acoustical Performance of Noise Barriers against Transport Noise Pollution

In: Computational Mechanics

Author

Listed:
  • S. Z. Peng

    (the Hong Kong Polytechnic University, Department of Mechanical Engineering)

  • L. Cheng

    (the Hong Kong Polytechnic University, Department of Mechanical Engineering)

  • Y. S. Choy

    (the Hong Kong Polytechnic University, Department of Mechanical Engineering)

  • H. M. Sun

    (The University of Western Australia, Centre for Acoustics, Dynamics and Vibration, School of Mechanical Engineering)

Abstract

This paper aims to establish a framework for effective design of noise barriers based on two key noise abatement mechanisms — acoustical wave diffraction and active wave energy dissipation. Both mechanisms are evaluated for noise barriers of an optimal design using an integrated approach based on a novel acoustical wave propagator technique, numerical simulations of wave interaction with the barriers, and mechanistic models for activated structural vibration of surface foil of the barriers under acoustical wave pressure. These investigations produce a database for effective design of noise barriers and a good understanding of time-domain acoustical-structure interaction can be achieved. Therefore, the outcome can provide a deep insight to the acoustical performance of noise barriers in reducing noise pollution in urban environments and other applications.

Suggested Citation

  • S. Z. Peng & L. Cheng & Y. S. Choy & H. M. Sun, 2007. "Accurate and Efficient Prediction of Acoustical Performance of Noise Barriers against Transport Noise Pollution," Springer Books, in: Computational Mechanics, pages 324-324, Springer.
    • Handle: RePEc:spr:sprchp:978-3-540-75999-7_124
    DOI: 10.1007/978-3-540-75999-7_124
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