Dynamic analysis for whirling vibration of ship propulsion system with bearing misalignment
Due to factors such as hull deformation,the bearings of the ship's propulsion shafting were misaligned.The shafting was regarded as a continuous beam and the propeller as a rigid disk.An ana-lytical model of the shaftings whirling vibration was established.At the same time,the influence of bearing misalignment on whirling vibration was studied through computational analysis and experi-ments.The research results show that only the bearing displacement itself has a relatively small im-pact on whirling vibration.In practice,the drastic change in the axis trajectory caused by bearing dis-placement may be related to the change in bearing stiffness caused by the change in the contact state between the shaft and the bearing.This conclusion is significant in that it may provide guidance for further exploring the whirling vibration characteristics of misaligned ship propulsion shafting.
万方数据
维普
