DETERMINATION OF APPROPRIATE TORSIONAL VIBRATION DAMPERS FOR A SHIP PROPULSION PLANT


Korkmaz F. C., Alarçin F.

Proceedings of 14th International conference „Maritime Transport and Infrastructure, Riga, Latvia, 11 July 2022, pp.126-131

  • Publication Type: Conference Paper / Full Text
  • City: Riga
  • Country: Latvia
  • Page Numbers: pp.126-131
  • Yıldız Technical University Affiliated: Yes

Abstract

Unstable working performance of main engine and some other external disturbances are the main reasons for vibration of propulsion plant of a ship. The most efficient encountered vibration is torsional vibration by reason of unsteady power loads and inertia forces on the ship main engine-shaft system. Crankshaft balancing weight as a passive system and torsional damping element as an active system are used in order to prevent this type of vibration. In this study angular motion of the main engine-shaft and propeller plant was modeled using Lagrange Method and damping elements were added to the composed model to decrease the torsional vibration effect. Different damping values were tried to find appropriate torsional amplitude and velocity for the model. As shown in simulation results, torsional vibration values of propeller-shaft system being up to ABS standards were obtained