Fatigue damage prediction of ship rudders under vortex-induced vibration using orthonormal modal FSI analysis |
| |
Institution: | 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. DLR Institute for Maritime Energy Systems, Geesthacht, Germany;2. Hamburg University of Technology, Hamburg, Germany;3. 50Hertz Transmission GmbH, Berlin, Germany;1. College of Engineering, Ocean University of China, Qingdao 266100, China;2. Shandong Province Key Laboratory of Ocean Engineering, Ocean University of China, Qingdao 266100, China;3. China Three Gorges Renewables (Group) Co., Ltd., Beijing 101100, China |
| |
Abstract: | Recently, the fatigue failure of ship rudders owing to vortex-induced vibration has increased as commercial ships become faster and larger. However, previous methods are inappropriate for fatigue failure prevention owing to the lack of fluid–structure interaction considerations. This study aims to develop a fatigue damage prediction method that can be applied at the design stage to prevent fatigue failure of ship rudders under vortex-induced vibration. The developed prediction method employed the fluid–structure interaction (FSI) method to properly consider the fluid–structure interaction and implemented orthonormal mode shapes to reflect the complex geometry and boundary conditions of the ship rudders. For validation, vortex-induced vibration of the hydrofoil model was obtained using the developed method, and the prediction results matched well with the experimental results. Then, the fatigue damage of the ship rudder model under vortex-induced vibration was predicted using the developed method, and their characteristics are discussed. The stress distribution obtained using the developed method matched well with the geometrical characteristics of the ship rudders. The potential for fatigue failure due to the resonance of vortex-induced vibration was expected by comparing the stress distributions for various flow velocities to the S–N curves provided by the DNV classification. |
| |
Keywords: | Vortex-induced vibration Fluid–structure interaction Ship rudder Fatigue failure Numerical analysis |
本文献已被 ScienceDirect 等数据库收录! |
|