Analysis of damage evolution and causative factors of outer raceway micromorphology of small needle roller bearings under impact load
Industrial Lubrication and Tribology
ISSN: 0036-8792
Article publication date: 6 September 2022
Issue publication date: 25 October 2022
Abstract
Purpose
This paper aims to investigate the damage evolution of bearing raceways under impact conditions from the perspective of three-dimensional (3D) surface morphology changes and to analyze the causal factors with the aid of simulation.
Design/methodology/approach
An experimental device containing an impact generating mechanism, a transmission mechanism and a torque load is designed for the experiments of impact damage to the outer raceway of a small needle roller bearing HK1208 without an inner ring. Microscopic images and height color maps of each experimental stage were obtained using a 3D laser measurement microscope. The characterization parameters of the surface 3D morphology were extracted and analyzed. Dynamics simulations of the impact condition were performed using the finite element method to investigate the variations and distribution characteristics of the roller forces on the raceway.
Findings
The changes in roughness and 3D micromorphology show that the surface flattening phenomenon caused by the flattening effect occurs before the surface of the bearing raceway is damaged. The result of dynamic simulations shows that the maximum load of the bearing under the impact state is obviously greater than that under a steady state, and the load distribution under the two conditions is significantly different.
Originality/value
This paper provides new ideas for analyzing the damage of bearings under impact conditions by analyzing the real 3D morphology of bearing raceways in combination with the finite element method.
Keywords
Acknowledgements
This work was supported by the Science and Technology Project of State Grid Corporation of China (Grant No. 52120520005B) and Key Research Development Program of Anhui Province (Grant No. 202004a05020057).
Funding: Science and Technology Project of State Grid Corporation of China (No. 52120520005B), Key Research Development Program of Anhui Province (No. 202004a05020057).
Conflict of interest: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
Citation
Liu, B., Feng, Y., Wu, S., Wei, C. and Wang, W. (2022), "Analysis of damage evolution and causative factors of outer raceway micromorphology of small needle roller bearings under impact load", Industrial Lubrication and Tribology, Vol. 74 No. 10, pp. 1147-1154. https://doi.org/10.1108/ILT-06-2022-0206
Publisher
:Emerald Publishing Limited
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