Effect of structural parameters and service conditions on the tilt angle of double row angular contact ball bearing

2021 ◽  
pp. 146441932110610
Author(s):  
Zhaoliang Cui ◽  
Rui He ◽  
Wanyu Wu ◽  
Fengtao Wang ◽  
Liu Heng
Keyword(s):  
Tilt Angle ◽  
Ball Bearing ◽  
Structural Parameters ◽  
Coincidence Degree ◽  
Radial Clearance ◽  
Initial Contact ◽  
Analysis Model ◽  
Angular Contact Ball Bearing ◽  
Double Row ◽  
Service Conditions

In this paper, for double row angular contact ball bearing, a five-degrees-of-freedom bearing analysis model based on quasi-statics is proposed. This model is used to study the influence of structural parameters and service conditions on the tilt angle and limit tilt angle of the bearing. The results show that the radial clearance will increase the ultimate tilt angle. The coincidence degree between the roller and the inner raceway will reduce the ultimate tilt angle, but the coincidence degree between the roller and the outer raceway has the opposite effect. The increase in the external load of the bearing will increase the tilt angle. The moment load has the greatest effect on the tilt angle. The rotation speed of the bearing has no effect on the tilt angle. The coincidence degree between the roller and the raceway will reduce the tilt angle; furthermore, the influence of the coincidence degree between roller and different ring on the tilt angle is also different when different rings are fixed. The tilt angle will decrease with the increase of the initial contact angle, and this effect is more and more obvious. The fixation of different ring has no effect on this influence.

Application of Genetic Algorithm in Numerical Solution of Analysis Model for Angular-Contact Ball Bearings

2011 ◽  
Vol 411 ◽  
pp. 11-15
Author(s):  
Hao Hao Shi ◽  
You Yun Zhang ◽  
Zhi Zhou ◽  
Peng Wang
Keyword(s):  
Genetic Algorithm ◽  
Ball Bearing ◽  
Contact Theory ◽  
Hertz Contact ◽  
Improved Genetic Algorithm ◽  
Analysis Model ◽  
Initial Value ◽  
Angular Contact Ball Bearing ◽  
Calculation Results ◽  
Raphson Method

In this paper, an angular contact ball bearing analysis model has been established based on Hertz contact theory. Solving nonlinear equations by improved genetic algorithm (IGA) and verified the effectiveness of the method through numerical experiment. The results proved that the adoption of IGA to solve the analysis model of angular contact ball bearing, can effectively resolve the problem of the Newton-Raphson method such as no convergence and need initial value, the calculation results is satisfied.

Effects of Interference Fit and Preload on the Performance of Low-Speed Angular Contact Ball Bearing

2010 ◽  
Vol 97-101 ◽  
pp. 3408-3412 ◽  
Author(s):  
Wei Hua Ni ◽  
Zheng Qiang Yao ◽  
Jun Tong Xi
Keyword(s):  
Contact Angle ◽  
Ball Bearing ◽  
Radial Clearance ◽  
Axial Stiffness ◽  
Angular Contact Ball Bearing ◽  
Element Analysis ◽  
Interference Fit ◽  
Low Speed ◽  
The Finite Element Analysis ◽  
Small Contact Angle

Based on static analysis, this paper investigates the effects of interference fit and axial preload on the performance of the low-speed angular contact ball bearing. The results show the bearing with heavy preload and large radial clearance has big contact angle and high axial stiffness. Besides, large interference could result in small contact angle but high axial stiffness. When the bearing has large interference the axial stiffness increases rapidly due to the effect of interference on the axial stiffness stronger than that of contact angle. And the stiffness formula in the paper could provide boundary conditions for the finite element analysis of spindle-bearing system.

scholarly journals Research on the influencing factors of thermal characteristics of high-speed grease lubricated angular contact ball bearing

2021 ◽  
Vol 13 (6) ◽  
pp. 168781402110273
Author(s):  
Chang Zhang ◽  
Dan Guo ◽  
Jiyin Tian ◽  
Qingbo Niu
Keyword(s):  
Thermal Expansion ◽  
Heat Generation ◽  
High Speed ◽  
Ball Bearing ◽  
Thermal Characteristics ◽  
Generation Model ◽  
Analysis Model ◽  
Angular Contact Ball Bearing ◽  
Bearing Contact ◽  
Contact Parameters

The high temperature rise of grease lubricated angular contact ball bearing under high speed operation will affect the working accuracy of the bearing, and even lead to the loss of accuracy. In this paper, a friction heat generation model for high-speed grease lubricated angular contact ball bearing was established. Based on the quasi-static analysis model, the thermal expansion of the bearing components is brought into the quasi-static equilibrium equation, and the modified quasi-static analysis model of high-speed grease lubricated ACBB is obtained. Under grease lubrication conditions, a local bearing heat-generation model was employed to assess power losses in different contact zones, in which bearing contact parameters, external loads, and rotation speeds conditions were fully considered. Moreover, the temperature distribution of grease lubricated high-speed bearing was analyzed by the multi node thermal network method. Through the analysis model of bearing dynamic and thermal characteristics considering the influence of thermal expansion established, bearing contact parameters have significant differences. The calculated values of outer ring temperature of grease lubricated angular contact ball bearing is in good agreement with the experimental values. The model can predict the temperature values of grease lubricated angular contact ball bearing under axial load at high speed.

A Dynamic Modeling Approach for Spindle Bearing System Supported by Both Angular Contact Ball Bearing and Floating Displacement Bearing

2017 ◽  
Vol 140 (2) ◽  
Author(s):  
Songtao Xi ◽  
Hongrui Cao ◽  
Xuefeng Chen ◽  
Linkai Niu
Keyword(s):  
Dynamic Model ◽  
Dynamic Modeling ◽  
Ball Bearing ◽  
Radial Clearance ◽  
Fe Method ◽  
Angular Contact Ball Bearing ◽  
Modeling Approach ◽  
Spindle Shaft ◽  
Spindle Bearing ◽  
Bearing System

This paper presents a new dynamic modeling approach for spindle bearing system supported by both angular contact ball bearing (ACBB) and floating displacement bearing (FDB). First, a dynamic model of FDB is developed based on the discrete element method with each bearing component having six degrees-of-freedom (DOFs). Based on the developed FDB dynamic model and Gupta ACBB dynamic model, a fully coupled dynamic model of the spindle bearing system combined both ACBBs, and FDB is developed. In the proposed spindle bearing system model, the spindle shaft is modeled using finite element (FE) method based on the Timoshenko beam theory with the consideration of centrifugal force and gyroscopic moment. The coupling restriction between the dynamic bearing models and the FE spindle shaft model are the restoring forces and moments that are transmitted to the shaft by the bearings and the dynamic vibration response shared by both the bearing inner races and the corresponding nodes of the shaft where bearings are installed. A Fortran language-based program has been developed for the spindle bearing system with the dynamic bearing models solved using the Runge–Kutta–Fehlberg integration method and FE shaft model solved by Newmark-β method. Based on the developed model, the effect of the FDB radial clearance, system preload, and spindle rotating speed on the system dynamics, and the effect of the FDB radial clearance on the system unbalanced response have been investigated.

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