ITM Web Conf.
Volume 29, 20191st International Conference on Computational Methods and Applications in Engineering (ICCMAE 2018)
|Number of page(s)
|Computational Methods in Mechanical Engineering
|15 October 2019
Numerical Vibro-Acoustic Analysis of a Ship Compartment Structure
”Dunârea de Jos” University of Galati, Faculty of Engineering,
Domneascâ Street 47,
This paper investigates the vibro-acoustic problems of an elastic compartment structure (wheel house) belonging to a ship, coupled to the enclosed air. The excitations from the structural walls of the room by the sound source cause vibrations throughout the system and noise within the acoustic domain. Due to the coupling between the structural vibrations and acoustic pressure field, these systems are typically referred to as vibro-acoustic systems. The acoustic excitations and vibrations on the structural walls of a ship structure, however, are significantly larger and have a much more significant effect to the structural integrity of the ship. In order to determine whether coupled responses are needed, three frequency analyses have been performed: calculus of the first 5 natural frequencies of the fluid separately, the structure separately, and the fluid-structure coupled system. The wall thickness of the room walls is of 5 mm and made of layered composite. The stress analysis of the model at a highly participating structural mode is performed.
© The Authors, published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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