Finite Element Analysis of Hybrid Ceramic Ball Bearing Contact

2011 ◽  
Vol 474-476 ◽  
pp. 2064-2070
Author(s):  
Bian Guo ◽  
Yu Qiang Han ◽  
W.J. Lei ◽  
Hong Bo Wei ◽  
Fei Zhou Li
Keyword(s):  
Computer Technology ◽  
Ball Bearing ◽  
Contact Deformation ◽  
Element Analysis ◽  
Ceramic Ball ◽  
Practical Solution ◽  
Bearing Contact ◽  
Rolling Element ◽  
Hybrid Ceramic ◽  
Outer Contact

Because of its border nonlinearity, the contact between rolling element and ball race is difficult to be solved .With the development of computer technology and FEA theory, practical solution about contact is possible. This thesis which takes B7005C hybird ceramic ball bearing for example draws inner and outer contact stress and contact deformation and compares the results with Hertz solution by modeling, meshing, and setting contact pairs in ANSYS. The results show the use of ANSYS in bearing simulation is ideal, and can take a reference for the bearing simulation.

An Accurate Method for Calculating the Contact Subsurface Stress Field of Hybrid Ceramic Ball Bearing

2011 ◽  
Vol 175 ◽  
pp. 215-218 ◽  
Author(s):  
Cheng Wang ◽  
Wei Yu ◽  
Cheng Zu Ren
Keyword(s):  
Fatigue Life ◽  
Stress Field ◽  
Ball Bearing ◽  
Accurate Method ◽  
Contact Deformation ◽  
The Finite Element Method ◽  
Ceramic Ball ◽  
Closed Form Analytical Solution ◽  
Subsurface Stress ◽  
Hybrid Ceramic

In order to predict fatigue life of hybrid ceramic ball bearing (HCBB) by Ioannides and Harris (IH) theory, the contact subsurface stress field is needed. The contact surfaces of ball and race groove are compatible. The closed-form analytical solution of compatible contact problem is hard to be obtained. The Finite Element Method (FEM) together with submodel technology is adopted to accurately and efficiently calculate the contact deformation and subsurface stress of ball–race groove contact. The result indicated that, the FEM with submodel technology considers the real contact deformation of ball-race groove, and can accurately and efficiently calculate the subsurface stress field. It is believed that the calculated subsurface stress field can be used in IH theory to predict fatigue life of HCBB.

Vibrations of the All-Ceramic Ball Bearing

2002 ◽  
Vol 124 (3) ◽  
pp. 448-460 ◽  
Author(s):  
Hiroyuki Ohta ◽  
Shinya Satake
Keyword(s):  
Natural Vibration ◽  
Ball Bearing ◽  
Axial Direction ◽  
Outer Ring ◽  
Ball Bearings ◽  
Ceramic Ball ◽  
Vibration Spectra ◽  
All Ceramic ◽  
Hybrid Ceramic ◽  
Mass Type

All-ceramic ball bearings with silicone nitride balls and silicone nitride rings were tested and the vibration characteristics were compared with those of hybrid ceramic ball bearings and conventional steel ball bearings. The vibration measurement results showed that the overall vibratory velocity levels of the all-ceramic ball bearings are influenced by rotational velocities, and do not change with axial loads. Under a given axial load and rotational velocity, the overall vibratory velocity level of the all-ceramic ball bearing is the lowest, and the hybrid ball bearing the highest. The frequencies of main peaks in the measured vibration spectra of the all-ceramic ball bearing are higher than the frequencies of the corresponding main peaks for the hybrid ceramic ball bearing and the steel ball bearing. To explain the main peaks, modal analysis was done and the relationship between peak and natural vibration was analyzed. The results of the analyses showed that the main peaks are caused by: (1) the mass-type natural vibration of the outer ring in the vertical direction, (2) the bending natural vibration of the outer ring in the radial direction, (3) the moment of inertia-type natural vibration of the outer ring in the angular direction, (4) the mass-type natural vibration of the outer ring in the axial direction, and (5) the bending natural vibration of the outer ring in the axial direction. We also discuss the generating mechanism of the vibration and present the calculation method of the vibration spectra. As a result, it is clear that the vibration spectra of the all-ceramic ball bearing are determined by the amplitude of the waviness of the raceways and ball surface, the mobility, and the non-linear spring constant associated with the contact between the raceways and balls.

The Performance of a Hybrid Ceramic Ball Bearing Under High Speed Conditions with the Under-Race Lubrication Method

1997 ◽  
Vol 40 (4) ◽  
pp. 676-684 ◽  
Author(s):  
Y. Shoda ◽  
S. Ijuin ◽  
H. Aramaki ◽  
H. Yui ◽  
K. Toma
Keyword(s):  
High Speed ◽  
Ball Bearing ◽  
Ceramic Ball ◽  
Hybrid Ceramic

scholarly journals Comparison of analytical and numerical solution of bearing contact analysis

2019 ◽  
Vol 254 ◽  
pp. 02022
Author(s):  
Peter Šulka ◽  
Alžbeta Sapietová ◽  
Vladimír Dekýš ◽  
Milan Sapieta
Keyword(s):  
Ball Bearing ◽  
Pressure Level ◽  
Element Analysis ◽  
Hertz Theory ◽  
Rolling Ball ◽  
Bearing Contact ◽  
Analytical Formulas ◽  
Displacement Behavior ◽  
The Given ◽  
Ansys Workbench

In this paper, an effort has been put to analyze the rolling ball bearing using finite element analysis the contact pressure level, stress or displacement behavior of rolling ball bearing. The obtained results were then compared with the analytical results obtained through the methodology of Hertz theory, which means composition and solution of analytical formulas and equations based on specific ball bearing parameters in order achieve optimal results to demonstrate an almost identical similarity of results of numerical and analytical solution and correct setting up of the given simulation in computational software ANSYS Workbench.

Motion of a Ball in a Ball Bearing

1973 ◽  
Vol 95 (1) ◽  
pp. 263-268
Author(s):  
H. Portig ◽  
H. G. Rylander
Keyword(s):  
Deformation Theory ◽  
Coulomb Friction ◽  
Ball Bearing ◽  
Digital Simulation ◽  
Equations Of Motion ◽  
Unsteady Motion ◽  
Hertzian Contact ◽  
Contact Deformation ◽  
Normal Forces ◽  
Simulation Language

A method is developed which allows the digital simulation of the unsteady motion of a single ball constrained only by two moving bearing races. Any desired motion of the races can be simulated. Normal forces acting on the ball are calculated by Hertzian contact deformation theory. If there is slippage between ball and races, Coulomb friction is assumed to occur. Solutions to the differential equations of motion were obtained on a computer with the digital simulation language MIMIC. The phenomenon of ball control as well as the behavior of the ball as it reached a controlled state from rest were observed. This analysis can produce more realistic results than methods that assume that the ball is controlled at all times, especially when the races are radially or angularly displaced with respect to each other.

scholarly journals Numerical simulation and experimental comparison of flaw evolution on a bearing raceway: Case of thrust ball bearing

2018 ◽  
Vol 5 (4) ◽  
pp. 427-434 ◽  
Author(s):  
M.Y. Toumi ◽  
S. Murer ◽  
F. Bogard ◽  
F. Bolaers
Keyword(s):  
Structural Damage ◽  
Ball Bearing ◽  
Rolling Contact ◽  
Experimental Comparison ◽  
Ball Bearings ◽  
Damage State ◽  
Element Analysis ◽  
Rolling Surface ◽  
Experimental Apparatus ◽  
Good Agreement

Abstract Bearings are essential elements in the design of rotating machines. In an industrial context, bearing failure can have costly consequences. This paper presents a study of the rolling contact fatigue damage applied to thrust ball bearings. It consists in building a dynamic three-dimensional numerical model of the cyclic shift of a ball on an indented rolling surface, using finite element analysis (FEA). Assessment of the evolution in size of a surface spall as a function of loading cycles is also performed using FEM coupled with fatigue laws. Results are in good agreement with laboratory tests carried out under the same conditions using a fatigue test cell dedicated to ball bearings. This study may improve knowledge about estimating the lifetime of rolling components after onset of a spall using FEA and accounting for structural damage state. Highlights The experimental apparatus and damaged thrust ball bearing are described. We model a portion of the thrust ball bearing featuring a spherical indent. Numerical results in terms of stress field are compared to analytical results from the literature. A fatigue software is used to assess the evolution of spalling size. Good agreement is obtained between experimental test campaigns at different loads and FEA results.

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