Whirling of an Automobile Propeller Shaft at Lower Speeds (2nd Report)

Abstract

By a series of experiments on a model of an automobile propeller shaft, considerably strong whirling phenomena are found at 1/2, 1/4, 1/6, 1/8, …… of the ordinary critical speed. Calculations also show that the friction at the universal joints gives exciting forces of frequencies 2, 4, 6, 8, …… times as large as the rotating speed of the shaft, and therefore, it can be the cause of such vibrations.