Shaft Line Whirling Vibrations: Effects of Numerical Assumptions on Analysis Results
Whirling (lateral, transverse, bending) vibration of a typical marine power transmission system is not usually dangerous for a shaft line. Nevertheless, the shaft line lateral vibration analysis is quite often performed, especially for a long, elastic shaft line or when a ship hull is elastic compared to the propulsion system (Camisetti 1982). Whirling vibrations are transferred to the ship hull through journal bearings and may be a source of excessive superstructure vibrations. During whirling vibrations analysis, some parameters have to be checked. 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, difficult, and debated tasks. 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 (Murawski 2001). Additionally, the influence of the gyroscopic force and thrust force on whirling vibrations is discussed. The presented numerical analysis method is compared and verified by measurements on real ships.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
Document Type: Research Article
Publication date: 2005-04-01
More about this publication?
- Marine Technology is dedicated to James Kennedy, 1867-1936, marine engineer, and longtime member of the Society, in recognition and appreciation of his sincere and generous interest in furthering the art of ship design, shipbuilding, ship operation, and related activities. The Technical papers in this quarterly flagship journal cover a broad spectrum of research on the latest technological breakthroughs, trends, concepts, and discoveries in the marine industry. SNAME News is packed with Society news and information on national, section, and local levels as well as updates on committee activities, meetings, seminars, professional conferences, and employment opportunities. For access to Volume 47 Issue 2 and later, please contact SNAME
- Information for Authors
- Membership Information
- Volume 47 Issue 2 and later
- Ingenta Connect is not responsible for the content or availability of external websites