Dynamic Modelling for Calculating Comprehensive Stiffness of the ball bearing

Authors

  • Ri CholUk  School of Mechanical Technology, Kim Chaek University of Technology, Pyongyang, 950003, Democratic People's Republic of Korea
  • ZhangZhunHyok  School of Mechanical Technology, Kim Chaek University of Technology, Pyongyang, 950003, Democratic People's Republic of Korea
  • Ri JuYong  School of Mechanical Technology, Kim Chaek University of Technology, Pyongyang, 950003, Democratic People's Republic of Korea
  • NamGung Hwan  Pyongyang Transportation of Technology, Democratic People's Republic of Korea
  • Kim ChangSop  Pyongyang Transportation of Technology, Democratic People's Republic of Korea
  • Sung YunSong  Pyongyang Transportation of Technology, Democratic People's Republic of Korea
  • Kim JuYong  Pyongyang Transportation of Technology, Democratic People's Republic of Korea

Keywords:

Ball Bearing, Comprehensive Stiffness, Hertz Contact Stiffness, Oil Film Stiffness, Dynamic Modeling.

Abstract

The rotor system supported by the ball bearings is widely used in various fields such as aviation, space, and machinery due to its importance. In the study of the dynamic characteristics for the ball bearings, it is important to accurately calculate the stiffness of the ball bearings. The stiffness of the ball bearings is very important in the analysis of the vibration characteristics of the rotor system. Therefore, in this paper, the method of creating a comprehensive stiffness model of the ball bearing is mentioned. In consideration of the radial clearance of the ball bearing, the radial load acting on the ball bearing was derived, and based on this, a model for calculating the Hertz contact stiffness of the ball bearing was created. Based on the load considering the radial clearance, an oil film stiffness model of the ball bearing was created under the EHL theory. Then, the comprehensive stiffness was calculated by combining Hertz contact stiffness and the oil film stiffness of the ball bearing. When the radial clearance of the ball bearing is considered, the comprehensive stiffness is larger than when the radial clearance is not taken into account, and the radial clearance of the ball bearing is an important factor that directly affects the comprehensive stiffness of the ball bearing.

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IInternational Journal of Scientific Research in Mechanical and Materials Engineering

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Published

2022-03-05

Issue

Volume 6, Issue 2, March-April-2022

Section

Research Articles

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This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite

[1]
Ri CholUk, ZhangZhunHyok, Ri JuYong, NamGung Hwan, Kim ChangSop, Sung YunSong, Kim JuYong, " Dynamic Modelling for Calculating Comprehensive Stiffness of the ball bearing, IInternational Journal of Scientific Research in Mechanical and Materials Engineering(IJSRMME), ISSN : 2456-3307, Volume 6, Issue 2, pp.01-06, March-April-2022.