Seminar Title
Dynamic behaviors of a functionally graded rotating shaft-bearing system with nonlinear supports
Seminar Type
Departmental Seminar
Mechanical Engineering
Speaker Name
Mr. Bala Murugan S (Roll No. 518me3031)
Speaker Type
Seminar Hall, Mechanical Engineering Department
Date & Time
26 May 2023 12:00 PM
Prof. R. K. Behera, Email:, Ph: 0661-2462504
The extensive analyses of rotor-bearing-disk systems are inevitably a testing problem to get the exact results. There is a need to design functionally graded (FG) rotating shafts in the currently developed industries for specific applications is a keen area of focus at this time. It is observed that very few studies were reported on FG rotor-bearing-disk systems stability issues. This paper gives the study of finite element (FE) dynamic modeling procedures and the stability analysis of a rotating FG rotor-bearing-disk system. Timoshenko beam theory is used to model the dynamic FG shaft by accounting for the gyroscopic effects, translational and rotary inertia, shear deformation, bending, and material (viscous and hysteretic) damping. The governing equations are obtained by implementing Hamilton’s principle. In this present study, Zirconia (ZrO2) and stainless steel (SUS304) are considered as main components of radially categorized FG shafts. Five-noded beam elements are considered by taking into account four degrees of freedom per node. The results from the Campbell diagram, stability threshold, time histories, and damping ratio for the FG shaft are compared with the regular standard steel shaft. It is observed that the results obtained for FG rotating shaft are notably controlled by the constituents of the radially classified FG shaft. This result leads to the importance of the FG shaft over the standard steel shaft.