Open AccessA non-Hertzian contact analysis for the ball and raceway of a deep groove ball bearing
Author(s) -
Qiang Xi,
Yangjun Pi,
Yumei Hu
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/542/1/012025
Subject(s) - raceway , ball (mathematics) , contact mechanics , structural engineering , bearing (navigation) , materials science , groove (engineering) , finite element method , ball bearing , mechanics , contact area , contact force , contact analysis , stress (linguistics) , engineering , composite material , geometry , physics , mathematics , classical mechanics , metallurgy , linguistics , philosophy , astronomy , lubrication
Aiming at the premature damage of deep groove ball bearings, considering axial load, elastic-plastic constitutive, coordinated contact and bearing clearance and so on, a non-Hertzian elasto-plastic contact analysis for the bearing ball and the raceway is performed by trans-scale three-dimensional finite element simulation. The results shown that the failure mechanism of the bearing is extremely similar to the L-P fatigue life theory. The effects of load magnitude and direction on contact state were further studied. It indicates that a certain angle of load is beneficial to reduce the maximum internal stress of the bearing, but the angle should not be too large. Besides, increasing the load magnitude results in an increase in the stress value and the depth of maximum stress, but when the load is too heavy, the area that touches the contact surface will be damaged firstly and quickly.