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ORIGINAL RESEARCH article

Front. Phys.
Sec. Interdisciplinary Physics
Volume 12 - 2024 | doi: 10.3389/fphy.2024.1522808
This article is part of the Research Topic Wave Propagation in Complex Environments, Volume II View all 8 articles

Acoustic interaction of submerged thin-shell structures considering seabed reflection effects

Provisionally accepted
Xin Zhang Xin Zhang 1Kai Ai Kai Ai 2Sen Yang Sen Yang 3Qingxiang Pei Qingxiang Pei 3*Guang Lei Guang Lei 3
  • 1 Henan International Joint Laboratory of Structural Mechanics and Computational Simulation, College of Architectural and Civil Engineering, Huanghuai University, Zhumadian, China
  • 2 Key Laboratory of Geotechnical Mechanics and Engineering of Ministry of Water Resources，Yangtze River Scientific Research Institute, Wuhan, China
  • 3 Xinyang Normal University, Xinyang, China

The final, formatted version of the article will be published soon.

    The paper presents a novel approach for simulating acoustic-shell interaction associated with seabed reflection effects. The finite element method (FEM) with Kirchhoff-Love shell elements is employed for numerical analysis of thin-shell vibration. The boundary element method (BEM) with half-space fundamental solutions is used to simulate exterior acoustic fields associated with seabed reflection. Then the FEM and BEM are coupled to simulate interaction between acoustics wave and shell vibration. In addition, the FEM-BEM are implemented within isogeometric analysis framework. That is, the basis functions in geometrical modelling are taken to discretize physical fields, in order to retain geometric exactness, eliminate meshing process, and more importantly, construct high-order continuous fields which allow for the use of Kirchhoff-Love shell theory.Finally, fast multipole method is formulated for the coupled system to accelerate the computation and reduced memory storage. The effectiveness of the algorithm is demonstrated through numerical examples.

    Keywords: FEM, BEM, Seabed reflection, Shell vibration, Acoustics

    Received: 05 Nov 2024; Accepted: 30 Dec 2024.

    Copyright: © 2024 Zhang, Ai, Yang, Pei and Lei. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Qingxiang Pei, Xinyang Normal University, Xinyang, China

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