Modeling and calculation of acoustic radiation of underwater stiffened cylindrical shells treated with local damping |
| |
| Institution: | 1. China Ship Scientific Research Center, Wuxi, 214082, China;2. Taihu Laboratory of Deepsea Technological Science, Wuxi, 214082, China;3. State Key Laboratory of Deep-sea Manned Vehicles, Wuxi, 214082, China;4. National Key Laboratory on Ship Vibration and Noise, Wuxi, 214082, China;1. Shanghai Engineering Research Center of Marine Renewable Energy, College of Engineering Science and Technology, Shanghai Ocean University, Shanghai, China;2. University of Stavanger, Norway;1. College of Safety and Ocean Engineering, China University of Petroleum-Beijing, 18 Fuxue Road, Changping, Beijing, 102249, PR China;2. Engineering& Design Institute of CNPC Offshore Engineering Company Limited, Beijing, 100028, PR China;3. Faculty of Materials and Chemical Engineering,Yibin University, Yibin 644000, Sichuan, PR China;1. School of Naval Architecture and Ocean Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, China;2. gMarine, Houston, TX, USA;3. China Ship Scientific Research Center (CSSRC), Wuxi, 214082, China;1. State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, No. 2 Linggong Road, Dalian, 116023, China;2. College of Mechanical and Electrical Engineering, Harbin Engineering University, No. 145 Nantong Street, Harbin, 150001, China |
| |
| Abstract: | Damping materials are widely used and playing an essential role in reducing the vibration and noise of various ships and underwater vehicles. In practical engineering, damping materials are often applied over the structural surface of ships and underwater vehicles. They are generally distributed not evenly in the whole area, but locally in some vital regions. The stiffened cylindrical shell is the most representative configuration for the main structure of underwater vehicles. Therefore, research on modeling and calculation of underwater acoustic radiation from stiffened cylindrical shells locally treated with damping has high practical value. This paper introduces a mixed analytical-numerical acoustic-vibration interaction method to achieve efficient calculation of the vibration and acoustic radiation from a locally damped cylindrical shell immersed in water. Two kinds of vibration and noise reduction measures are proposed for the damping treatment of a large-scale stiffened cylindrical shell structure. Calculation and analysis are carried out for both measures. The results can provide reference for developing the technology of reducing vibration and noise from ships and underwater vehicles via damping treatment. |
| |
| Keywords: | Fluid-structure interaction Viscoelastic damping Cylindrical shell Vibration Acoustic radiation |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
