Shaft line alignment analysis taking ship construction flexibility and deformations into consideration |
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| Institution: | 1. School of Naval Architecture and Ocean Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China;2. State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai 200240, China;3. Hubei Provincial Engineering Research Center of Data Techniques and Supporting Software for Ships (DTSSS), Wuhan, Hubei 430074, China;1. Department of Maritime Engineering, Amirkabir University of Technology, Tehran, Iran;2. Department of Mechanical Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran |
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| Abstract: | Proper shaft line alignment is one of the most important actions during the design of the propulsion system. Usually, a beam model of the power transmission system is isolated from the ship hull. Therefore, determining the correctness of the boundary conditions is one of the most important and difficult issue during the marine shaft line alignment calculations. In the author's opinion stiffness and damping characteristics of the journal bearings’ oil film, ship hull and bearings frame should be taken into account. Ship hull deformations, under different load conditions and regular sea waves, are also analysed. The presented numerical analysis method is compared and verified by measurements on real ships. |
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