Dynamic Absorber Characteristics of Decoupling Coating Covering Underwater Structure

DOI

10.2991/mems.2012.170How to use a DOI?

Keywords

decoupling coating; dynamic absorber; underwater sound radiation; underwater structure

Abstract

It is a difficult problem to reduce the low-frequency vibration and radiation noise of underwater structure by decoupling coating. Assuming decoupling coating as viscoelastic fluid, a vibroacoustic model of a simply supported rectangular plate covered by decoupling coating is presented. The model simulates the vibration and acoustic response of the structure which is water-loaded on one side and air backed on the other. The characteristics of vibration and acoustics reduction by the decoupling coating are analyzed. The results show that: 1) For single flexural mode of plate, plate-decoupling coating-water layer is similar to two-freedom degree system, which has two resonant frequencies and an anti-resonant frequency, and dynamic absorber characteristics are introduced by decoupling coating; 2) Dynamic absorber characteristics could be utilized to reduce the low-frequency vibration and underwater radiation noise by selecting suitable parameters of decoupling coating.

Copyright

© 2012, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - HE Shi-ping
AU  - LIU Gui-feng
PY  - 2012/12
DA  - 2012/12
TI  - Dynamic Absorber Characteristics of Decoupling Coating Covering Underwater Structure
BT  - Proceedings of the 1st International Conference on Mechanical Engineering and Material Science (MEMS 2012)
PB  - Atlantis Press
SP  - 649
EP  - 653
SN  - 1951-6851
UR  - https://doi.org/10.2991/mems.2012.170
DO  - 10.2991/mems.2012.170
ID  - Shi-ping2012/12
ER  -