Experimental investigation on double-impulse phenomenon of hybrid ceramic ball bearing with outer race spall

2018 ◽  
Vol 113 ◽  
pp. 189-198 ◽  
Author(s):  
Yu Guo ◽  
Shou-Bao Sun ◽  
Xing Wu ◽  
Jing Na ◽  
Rong-Fong Fung
Keyword(s):  
Experimental Investigation ◽  
Ball Bearing ◽  
Ceramic Ball ◽  
Outer Race ◽  
Hybrid Ceramic

Motions of an Unstable Retainer in an Instrument Ball Bearing

1994 ◽  
Vol 116 (2) ◽  
pp. 202-208 ◽  
Author(s):  
E. Kingsbury ◽  
R. Walker
Keyword(s):  
Experimental Investigation ◽  
Rigid Body ◽  
Rotation Rate ◽  
High Frequency ◽  
Ball Bearing ◽  
Stable Operation ◽  
Frequency Content ◽  
Outer Race ◽  
Group Rotation ◽  
Inner Race

We made an experimental investigation of the motions of the retainer in an instrument ball bearing during stable operation and during squeal. Radial motions of the retainer were measured with two fiber-light probes mounted 90 physical degrees apart. A signal analyzer was used to determine the phasing and frequency content of the probe signals. During squeal, a high-frequency retainer motion was found to be superimposed on the normal retainer ball group rotation rate. This high-frequency motion, which we call whirl, is a rigid-body translation in a circle. Whirl direction is opposite to the race for outer-race rotation, but in the same direction for inner-race rotation. Whirl frequency is approximately proportional to ball spin rate. The observations agree with predictions made from a squeal model based on retainer-to-ball frictional coupling that was originally presented in 1965.

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

Analysis of Ball Bearing Vibrations Caused by Outer Race Waviness

1998 ◽  
Vol 120 (4) ◽  
pp. 901-908 ◽  
Author(s):  
K. Ono ◽  
Y. Okada
Keyword(s):  
Experimental Investigation ◽  
Analytical Study ◽  
Ball Bearing ◽  
Analytical Investigation ◽  
Outer Race ◽  
Number Of Factors ◽  
Rolling Elements ◽  
Race Track ◽  
Bearing Vibration ◽  
Radial Gap

An analytical investigation of the shaft vibration caused by a ball bearing is presented in this paper. Bearing vibration could be caused by a number of factors, such as defects occurring on the race track or the rolling elements. A common problem with defective bearings is the generation of waviness on the outer race track during the manufacturing process. The vibration of an automobile drive shaft caused by rolling elements rolling over the waviness surface is transmitted to the passenger cabin, and produces undesirable noise. In this paper an analytical study is undertaken to evaluate the effect of waviness number, radial gap and shaft imbalance on the bearing vibration. An experimental investigation was carried out to confirm the analytical study. The results show that the analytical study and experimental investigation agree very well.

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.

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.

Analysis of Ball Bearing Vibrations Caused by Outer Race Waviness

1997 ◽  
Author(s):  
Koichiro Ono ◽  
Yohji Okada
Keyword(s):  
Experimental Investigation ◽  
Analytical Study ◽  
Ball Bearing ◽  
Vibration Spectrum ◽  
Outer Race ◽  
Rolling Elements ◽  
Race Track ◽  
Efficient Machine ◽  
Radial Gap ◽  
Passenger Cabin

Abstract Even with the use of highly efficient machine, the manufacturing of rolling elements bearings still results in defective bearings. The defects could be on the race track or the rolling elements. A common problem with defective bearing is the generating waviness on the outer race track during the manufacturing process. The vibrations caused by rolling elements rolling over the waviness surface is transmitted to the passenger cabin and produced unwanted noise. In this paper an analytical study was first undertaken to evaluate the effect of waviness number, radial gap and shaft unbalance on the vibration spectrum. Experimental investigation was carried out to confirm the analytical study. The experimental results agreed very well with the numerical analysis.

An improved model for investigating the vibration characteristics of ball bearing owing to outer race waviness under high speed

2021 ◽  
Vol 69 (2) ◽  
pp. 89-101
Author(s):  
Pingping Hou ◽  
Liqin Wang ◽  
Zhijie Xie ◽  
Qiuyang Peng
Keyword(s):  
High Speed ◽  
Ball Bearing ◽  
Vibration Measurement ◽  
Vibration Frequencies ◽  
Outer Race ◽  
Response Characteristics ◽  
Lagrange’S Equation ◽  
Rolling Elements ◽  
Initial Clearance ◽  
Improved Model

In this study, an improved model for a ball bearing is established to investigate the vibration response characteristics owing to outer race waviness under an axial load and high speed. The mathematical ball bearing model involves the motions of the inner ring, outer ring, and rolling elements in the radial XY plane and axial z direction. The 2Nb + 5 nonlinear differential governing equations of the ball bearing are derived from Lagrange's equation. The influence of rotational speed and outer race waviness is considered. The outer race waviness is modeled as a superposition of sinusoidal function and affects both the contact deformation between the outer raceway and rolling elements and initial clearance. The MATLAB stiff solver ODE is utilized to solve the differential equations. The simulated results show that the axial vibration frequency occurred at l fc and the radial vibration frequencies appeared at l fc fc when the outer race waviness of the order (l) was the multiple of the number of rolling elements (k Nb) and that the principal vibration frequencies were observed at l fc fc in the radial x direction when the outer race waviness of the order (l) was one higher or one lower than the multiple of the number of rolling elements (k Nb 1). At last, the validity of the proposed ball bearing model was verified by the high-speed vibration measurement tests of ball bearings.

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