Feasibility Study of Vibration Absorbers With Simplified Ship Propulsion Models

Abstract

Torsional vibrations on the propulsion drive train of a ship due to harmonic loads are thoroughly analyzed by classification societies. During operation however the drive train is subjected to transient loads and the masselastic system interacts with the speed controller. Here we derive a smart reduced model of the ship propulsion system capable of revealing the low frequent dynamics which dominate the transient response. A possible approach to counter the damage caused by transient loads, is the attachment of a vibration absorber. The simplified model allows us to check the feasibility of this approach