Abstract
The alignment quality optimization and vibration damping of ship shafting is one of the key issues in ship research field. The quality of shafting alignment affects the vibration characteristics of a shafting and the safety, reliability of a ship in operation directly. A motor drive propulsion shafting was researched in this paper, which focuses on the linear alignment and load coefficient calculation. Based on these calculation results, the alignment quality was optimized and the whirling vibration characteristic under different alignment conditions was calculated. In order to optimize the shafting alignment quality and vibration characteristics simultaneously by adjusting the vertical position of each bearing, optimization weight coefficient was present, which provided a new idea for comprehensive optimization of vibration damping and shafting alignment.
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