The Experts below are selected from a list of 11274 Experts worldwide ranked by ideXlab platform
Daniel Nelias - One of the best experts on this subject based on the ideXlab platform.
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Ball motion and sliding friction in a four-contact-point Ball Bearing
Journal of Tribology, 2007Co-Authors: Alexandre Leblanc, Daniel NeliasAbstract:An analysis of double arched Ball Bearing, which considers centrifugal forces and gyroscopic effects, is performed. Based on operating conditions of a five DOF inner ring and Coulomb friction model, the conventional Bearing theory is extended from two to three or four-contact points. The commonly used control criterion of Ball. Bearing by the inner or outer race way is debatable and is known to fit with difficulty with experimental data. In addition, when more than two-contact points are involved, it becomes obsolete. The paper presents a mathematical model to describe the complex Ball Bearing internal kinematics under the effect of the external working conditions. Lubricant thickness is taken into account in geometrical equations and the nonlinear system of this quasistatic model is solved by a Newton-Raphson method. The model is first validated through comparisons with published data for conventional or single arched Ball Bearings. Results are also compared to those provided by the commercial software RBL4. The analysis of a double arched Ball Bearing is finally performed and the complex motion of the Ball highlighted.
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Ball Motion and Sliding Friction in an Arched Ball Bearing
ASME STLE 2007 International Joint Tribology Conference Parts A and B, 2007Co-Authors: Alexandre Leblanc, Daniel Nelias, Daniel Georges PlonaAbstract:An analysis of double arched Ball Bearing which considers centrifugal forces and gyroscopic effects is performed. Based on operating conditions of a 5 DOF inner ring and Coulomb friction model, the conventional Bearing theory is extended from 2 to 3 or 4 contact points. The commonly control criterion of Ball Bearing by the inner or outer raceway is debatable and is known to fit with difficulty with experimental data. In addition when more than two contact points are involved it becomes obsolete. The paper presents a mathematical model to describe the complex Ball Bearing internal kinematics under the effect of the external working conditions. Lubricant thickness is taken into account in geometrical equations and the non-linear system of this quasi-static model is solved by a Newton-Raphson method. The 3D model is first validated through comparisons with published data for conventional or single arched Ball Bearings. Results are also compared to those provided by the commercial software RBL4. The analysis of a double arched Ball Bearing is finally performed and the complex motion of the Ball highlighted.Copyright © 2007 by ASME
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location of an acoustic emission source in a radially loaded deep groove Ball Bearing
Proceedings of the Institution of Mechanical Engineers Part J: Journal of Engineering Tribology, 1998Co-Authors: Daniel Nelias, T YoshiokaAbstract:AbstractThis paper describes a deep groove Ball-Bearing analysis which has been developed to simulate acoustic emission occurring during Ball-Bearing operation. The computer simulation is useful to clarify experimental research on rolling contact fatigue initiation using the acoustic emission technique. Results show the ability of the method to detect and to locate a subsurface defect, due to rolling contact fatigue, before the rolling Bearing failure occurs. The subsurface defect can be accurately located within the inner ring of a deep groove Ball-Bearing operating under radial load.
Zhang Wen-ping - One of the best experts on this subject based on the ideXlab platform.
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Vibration characteristics of Ball Bearing with waviness
Journal of Daqing Petroleum Institute, 2007Co-Authors: Zhang Wen-pingAbstract:By means of mechanics analysis, the Ball Bearing vibration model was established, the effect of waviness on surface rolling elements for Bearing vibration system and the vibration characteristics were analyzed when a defect on surface rolling elements of Bearing was detected by this model. The results show that the theoretic calculation and experimental investigation agree with each other very well. The conclusions are very useful for reducing vibration and noise of Ball Bearing.
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The analysis of Ball Bearing vibration characteristics caused by outer race waviness
Coal Mine Machinery, 2004Co-Authors: Wu Yun-peng, Zhang Wen-pingAbstract:Applying the theory of vibration,this research presents a vibration response model of Ball Bearing with outer race waviness,analysis the effect of radial gap between the Ball and the inner and the outer race to Ball Bearing vibration character by Matlab calculation program.The simulation results has been proved it is effective and it can offers a valid prop in Ball Bearing design and vibration and noise study.
Alexandre Leblanc - One of the best experts on this subject based on the ideXlab platform.
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Ball motion and sliding friction in a four-contact-point Ball Bearing
Journal of Tribology, 2007Co-Authors: Alexandre Leblanc, Daniel NeliasAbstract:An analysis of double arched Ball Bearing, which considers centrifugal forces and gyroscopic effects, is performed. Based on operating conditions of a five DOF inner ring and Coulomb friction model, the conventional Bearing theory is extended from two to three or four-contact points. The commonly used control criterion of Ball. Bearing by the inner or outer race way is debatable and is known to fit with difficulty with experimental data. In addition, when more than two-contact points are involved, it becomes obsolete. The paper presents a mathematical model to describe the complex Ball Bearing internal kinematics under the effect of the external working conditions. Lubricant thickness is taken into account in geometrical equations and the nonlinear system of this quasistatic model is solved by a Newton-Raphson method. The model is first validated through comparisons with published data for conventional or single arched Ball Bearings. Results are also compared to those provided by the commercial software RBL4. The analysis of a double arched Ball Bearing is finally performed and the complex motion of the Ball highlighted.
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Ball Motion and Sliding Friction in an Arched Ball Bearing
ASME STLE 2007 International Joint Tribology Conference Parts A and B, 2007Co-Authors: Alexandre Leblanc, Daniel Nelias, Daniel Georges PlonaAbstract:An analysis of double arched Ball Bearing which considers centrifugal forces and gyroscopic effects is performed. Based on operating conditions of a 5 DOF inner ring and Coulomb friction model, the conventional Bearing theory is extended from 2 to 3 or 4 contact points. The commonly control criterion of Ball Bearing by the inner or outer raceway is debatable and is known to fit with difficulty with experimental data. In addition when more than two contact points are involved it becomes obsolete. The paper presents a mathematical model to describe the complex Ball Bearing internal kinematics under the effect of the external working conditions. Lubricant thickness is taken into account in geometrical equations and the non-linear system of this quasi-static model is solved by a Newton-Raphson method. The 3D model is first validated through comparisons with published data for conventional or single arched Ball Bearings. Results are also compared to those provided by the commercial software RBL4. The analysis of a double arched Ball Bearing is finally performed and the complex motion of the Ball highlighted.Copyright © 2007 by ASME
Takayuki Hoshi - One of the best experts on this subject based on the ideXlab platform.
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Damage monitoring of Ball Bearing
CIRP Annals - Manufacturing Technology, 2006Co-Authors: Takayuki HoshiAbstract:A simple method and low cost equipment have been developed for monitoring the damage that occurs on rolling surfaces of the Ball Bearing in machine tool spindle. The monitoring identifies the initiation and the progress of geometrical damage of Bearing surfaces and issues a warning prior to the end of Bearing life.
Meng Hui-ling - One of the best experts on this subject based on the ideXlab platform.
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FOUR POINT CONTACT Ball Bearing AND THREE POINT CONTACT Ball Bearing CAD SYSTEM RESEARCH
Journal of Shaanxi University of Science & Technology, 2011Co-Authors: Meng Hui-lingAbstract:Four point contact Ball Bearing and three point contact Ball Bearing have already widespread used in the field of the engineering production,we will use AutoCAD2004 to design a parameterization.Carries on the DCL dialog box using the Autolisp language the manufacture,the plotting program compilation as well as the driver compilation.Through the parametrization cartography,the programming,the design thought that we realized have been able to carry on the parametrization to four contact Ball Bearings with three contact Ball Bearings to draw a chart this kind of software′s manufacture,and has received the anticipated effect.Causes the user to be possible to realize through this kind of software with computer′s man-machine interaction.Thus is advantageous for the user to be more convenient quick carries on four contact Ball Bearings to contact Ball Bearing′s cartography and the design with three contact Ball Bearings.
