Experimental Investigation of Vibration Response of Faulty Rotor Shaft Partially Submerged in Viscous Medium

Abstract

In the current investigation, it is taken an effort to determine the dynamic response of cracked rotor fixed at both ends partially immersed in the different viscous medium. The influence coefficient method is used to obtain dynamics response of faulty rotor shaft. The Navier-Stokes equation is applied to investigate the external fluid forces acted on the rotor shaft. The strain energy release rate at the crack section of the rotor has been used for determining the local stiffness and is dependent on the crack depth. The fluid viscosity, crack depth and the crack location are considered as main variable parameters. Also, the dynamic responses in two transverse directions (i.e., x-axis and y-axis) of the crack of the rotor shaft are numerically found. Further, experimental analysis has been done for authentication of the obtained numerical results.