Dynamic Absorber Characteristics of Decoupling Coating Covering Underwater Structure
HE Shi-ping, LIU Gui-feng
Available Online December 2012.
- https://doi.org/10.2991/mems.2012.170How to use a DOI?
- decoupling coating; dynamic absorber; underwater sound radiation; underwater structure
- 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.
- Open Access
- This is an open access article distributed under the CC BY-NC license.
Cite this article
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 - https://doi.org/10.2991/mems.2012.170 ID - Shi-ping2012/12 ER -