Some Investigations on the Vibrations of Marine Propeller Shafting

Abstract

This paper deals with the following two items relating to the vibrations of marine propeller shafting. 1) From the viewpoint of input of the vibrations, we calculated the propeller-exciting vibratory inputs for some tankers using the model wake distribution of T-2 tanker, and made clear the relation of the moment due to thrust to the overhang moment due to the propeller and the propeller-shaft overhang part. 2) From the viewpoint of output of the vibrations, we carried out some basic experiments on the dynamic characteristics of propeller mounted on a vibrating shaft, and arranged the results in a conventional form for the actual application.