Iranian Journal of Mechanical Engineering Transactions of ISME

Iranian Journal of Mechanical Engineering Transactions of ISME

Analytical, Numerical and Experimental Investigation of Wheel and Bo-gie Axle Vibrations to Identify Bearing Defects

Authors
Amir Hosein Arab 1
Abbas Rahi 2
Amir Masoud Hamidi Majd 1
1 M.Sc. Student, Faculty of Mechanical and Energy Engineering, Shahid Beheshti University, Tehran, Iran
2 Assistant Professor, Faculty of Mechanical and Energy Engineering, Shahid Beheshti University, Tehran, Iran
10.30506/ijmep.2023.1983394.1913
Abstract
With the increasing development of the railway industry, the inspection of bogie axle bearing defects has become more important. This article presents the model of 14 degrees of freedom of the wheel and bogie axle. After obtaining the equations governing the system's movement by analytical method and their linearization, the system's natural frequencies are calculated at different working speeds. In the following, the experimental results obtained from the laboratory setup are presented. The results obtained from the analytical method are verified by the experimental results and the results of Ansys software. Then, taking into account that the existence of failure in the bearing reduces the stiffness coefficient in the bearing, the effect of the failure of the bearing on the natural frequencies of the system is investigated. The results show that the second and fourth critical speeds of the system decrease as the axle bearings are damaged. Also, the effect of the failure of one of the bogie bearings has also been studied for a better understanding.
Keywords
Train bearing
Bogie wheel and axle
Dynamics of rotating machines
Critical speed
Defect in the bearing

Subjects

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  • Receive Date 24 December 2022
  • Revise Date 15 May 2023
  • Accept Date 04 October 2023