The Experts below are selected from a list of 324 Experts worldwide ranked by ideXlab platform
Seongwook Hong - One of the best experts on this subject based on the ideXlab platform.
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skidding analysis of Angular contact ball bearing subjected to radial load and Angular Misalignment
Journal of Mechanical Science and Technology, 2019Co-Authors: Laily Oktaviana, Vancanh Tong, Seongwook HongAbstract:Skidding is a phenomenon that frequently occurs in ball–raceway contact areas of bearings and often leads to their early failure. This paper presents a skidding analysis of Angular contact ball bearings (ACBBs) subjected to various boundary conditions. A five degrees-offreedom quasi-static model for ACBBs was employed to investigate skidding with ball and race contact forces and inertial loading by rotational speed. The model provided the internal load distribution of all rolling elements, which was subsequently used for the skidding prediction. Hirano’s criterion was used as a theoretical basis for the skidding analysis of ACBBs. Simulations were performed to investigate the influence of external loading, rotational speed, and Angular Misalignment on the bearing skidding. The effects of the preload method and initial contact angle on the skidding were also considered. As a result, this study provided an in-depth observation of skidding in ACBBs subjected to various operating conditions.
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study on the running torque of Angular contact ball bearings subjected to Angular Misalignment
Proceedings of the Institution of Mechanical Engineers Part J: Journal of Engineering Tribology, 2018Co-Authors: Vancanh Tong, Seongwook HongAbstract:Angular Misalignment is unavoidable in most applications of rolling-element bearings. The goal of this study is to examine the effects of Angular Misalignment on the running torque of Angular contact ball bearings. A computational method to calculate the running torque of misaligned Angular contact ball bearings was introduced. Then, the effects of Angular Misalignment, along with radial and axial loading, on the running torque of Angular contact ball bearings were investigated for two representative preloading methods: constant-force preload and constant-displacement preload. The simulation results showed that (1) the Angular Misalignment, irrespective of bearing loading, significantly increases the Angular contact ball bearing running torque when the constant-displacement preload method was implemented, and (2) the Angular Misalignment has an insignificant effect on the Angular contact ball bearing running torque when the constant-force preload method was adopted. Furthermore, an extensive simulation wa...
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the effect of Angular Misalignment on the stiffness characteristics of tapered roller bearings
Proceedings of the Institution of Mechanical Engineers Part C: Journal of Mechanical Engineering Science, 2017Co-Authors: Vancanh Tong, Seongwook HongAbstract:The effect of Angular Misalignment between inner and outer raceways on the stiffness characteristics of tapered roller bearings (TRBs) is investigated. A computational procedure is introduced to so...
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the effect of Angular Misalignment on the running torques of tapered roller bearings
Tribology International, 2016Co-Authors: Vancanh Tong, Seongwook HongAbstract:Abstract The occurrence of Angular Misalignment can considerably change bearing characteristics. However, the Angular Misalignment effect on the running torques for tapered roller bearings (TRBs) has not been thoroughly investigated. This paper presents a comprehensive formula to provide the running torques for TRBs with Angular Misalignment between inner and outer races. Simulations were performed to investigate the effects of Angular Misalignment on TRB torques for two representative preloading methods, constant force preload and constant displacement preload. Angular Misalignment under the constant displacement preload was found to increase the running torques under mild preload and to slightly decrease the running torques under heavy preload. Under the constant force preload, the running toques consistently decrease with an increase in Angular Misalignment.
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fatigue life of tapered roller bearing subject to Angular Misalignment
Proceedings of the Institution of Mechanical Engineers Part C: Journal of Mechanical Engineering Science, 2016Co-Authors: Vancanh Tong, Seongwook HongAbstract:Angular Misalignment, defined as the tilted angle between the outer ring and inner ring, is unavoidable in most applications of tapered roller bearings (TBRs) due to many potential causes such as s...
Yao Wu - One of the best experts on this subject based on the ideXlab platform.
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Friction torque study on double-row tapered roller bearing
2019 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), 2019Co-Authors: Tengfei Xu, Lihua Yang, Yao WuAbstract:Double-row tapered roller bearings (DTRBs) are key components of rotating machineries due to its great advantages in load-carrying and stiffness. Friction torque is one of the major indicators used to evaluate the performance of rolling bearing because it directly related to the power loss and heat generation. Nevertheless, the friction torque of DTRB is not deeply studied in the available literatures, especially those consider the influence of Angular Misalignment and radial clearance. Therefore, in current paper, the friction torque of DTRB is thoroughly investigated under combined radial and thrust load according to the extended mechanical model of DTRB. The total friction torque is considered as the summation of EHL rolling friction torque, elastic hysteresis loss, sliding friction at rib-roller end contact and viscous drag friction of lubricant. The current work mainly considers the influences of three parameters: axial pre-deformation, initial radial clearance and Angular Misalignment on the friction torque of the first and the second row of DTRB. The results indicate that the friction torque of these two rows of DTRB are greatly determined by the above parameters. Regardless the first or the second row, friction torques are both increase with the increase of axial pre-deformation and positive/negative Angular Misalignment, while decrease with the increase of initial radial clearance. The analysis of friction torque for DTRB will provide some useful guidance for the applications of DTRB.
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mechanical behavior of double row tapered roller bearing under combined external loads and Angular Misalignment
International Journal of Mechanical Sciences, 2018Co-Authors: Lihua Yang, Tengfei Xu, Haoliang Xu, Yao WuAbstract:Abstract In actual engineering applications, single-row tapered roller bearing is usually assembled into double-row bearing to accommodate the heavy load conditions. The running safety and stability of machineries are highly determined by the characteristics of double-row tapered roller bearing. Therefore, the mechanical behavior of double-row tapered roller bearing is discussed in current work by extending the mathematical model of three degrees of freedom. A comprehensive analytical procedure for double-row tapered roller bearing in the presence of combined external loads and Angular Misalignment is proposed. Meanwhile, centrifugal load is considered based on the theory of three degrees of freedom. Unlike other researches, the external loads and Angular Misalignment are taken as the so-called mixed input parameters in current work to deal with the quasi-static equilibrium equations of double-row tapered roller bearing by using the iterative technique known as Newton-Raphson method. The resisting moment, contact loads and fatigue life of double-row tapered roller bearing under different loads are mainly studied in present work. Meanwhile, the comprehensive calculations demonstrate the effects of external loads, axial pre-deformation, bearing rotating speed, and Angular Misalignment on the characteristics of double-row tapered roller bearing. The results indicate that the Angular Misalignment and axial pre-deformation can highly influence the resisting moment. The contact state between roller and inner ring as well as the contact state between roller and guiding flange of bearing are remarkably affected by the factors aforementioned. Moreover, the fatigue life of double-row tapered roller bearing is dependent on the rotating speed, external loads, and Angular Misalignment in a large extent. The analytical method and results reveal the several important aspects of double-row tapered roller bearing in applications and thus would help the selection, design and assembling of the bearing.
Vancanh Tong - One of the best experts on this subject based on the ideXlab platform.
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skidding analysis of Angular contact ball bearing subjected to radial load and Angular Misalignment
Journal of Mechanical Science and Technology, 2019Co-Authors: Laily Oktaviana, Vancanh Tong, Seongwook HongAbstract:Skidding is a phenomenon that frequently occurs in ball–raceway contact areas of bearings and often leads to their early failure. This paper presents a skidding analysis of Angular contact ball bearings (ACBBs) subjected to various boundary conditions. A five degrees-offreedom quasi-static model for ACBBs was employed to investigate skidding with ball and race contact forces and inertial loading by rotational speed. The model provided the internal load distribution of all rolling elements, which was subsequently used for the skidding prediction. Hirano’s criterion was used as a theoretical basis for the skidding analysis of ACBBs. Simulations were performed to investigate the influence of external loading, rotational speed, and Angular Misalignment on the bearing skidding. The effects of the preload method and initial contact angle on the skidding were also considered. As a result, this study provided an in-depth observation of skidding in ACBBs subjected to various operating conditions.
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study on the running torque of Angular contact ball bearings subjected to Angular Misalignment
Proceedings of the Institution of Mechanical Engineers Part J: Journal of Engineering Tribology, 2018Co-Authors: Vancanh Tong, Seongwook HongAbstract:Angular Misalignment is unavoidable in most applications of rolling-element bearings. The goal of this study is to examine the effects of Angular Misalignment on the running torque of Angular contact ball bearings. A computational method to calculate the running torque of misaligned Angular contact ball bearings was introduced. Then, the effects of Angular Misalignment, along with radial and axial loading, on the running torque of Angular contact ball bearings were investigated for two representative preloading methods: constant-force preload and constant-displacement preload. The simulation results showed that (1) the Angular Misalignment, irrespective of bearing loading, significantly increases the Angular contact ball bearing running torque when the constant-displacement preload method was implemented, and (2) the Angular Misalignment has an insignificant effect on the Angular contact ball bearing running torque when the constant-force preload method was adopted. Furthermore, an extensive simulation wa...
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the effect of Angular Misalignment on the stiffness characteristics of tapered roller bearings
Proceedings of the Institution of Mechanical Engineers Part C: Journal of Mechanical Engineering Science, 2017Co-Authors: Vancanh Tong, Seongwook HongAbstract:The effect of Angular Misalignment between inner and outer raceways on the stiffness characteristics of tapered roller bearings (TRBs) is investigated. A computational procedure is introduced to so...
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the effect of Angular Misalignment on the running torques of tapered roller bearings
Tribology International, 2016Co-Authors: Vancanh Tong, Seongwook HongAbstract:Abstract The occurrence of Angular Misalignment can considerably change bearing characteristics. However, the Angular Misalignment effect on the running torques for tapered roller bearings (TRBs) has not been thoroughly investigated. This paper presents a comprehensive formula to provide the running torques for TRBs with Angular Misalignment between inner and outer races. Simulations were performed to investigate the effects of Angular Misalignment on TRB torques for two representative preloading methods, constant force preload and constant displacement preload. Angular Misalignment under the constant displacement preload was found to increase the running torques under mild preload and to slightly decrease the running torques under heavy preload. Under the constant force preload, the running toques consistently decrease with an increase in Angular Misalignment.
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fatigue life of tapered roller bearing subject to Angular Misalignment
Proceedings of the Institution of Mechanical Engineers Part C: Journal of Mechanical Engineering Science, 2016Co-Authors: Vancanh Tong, Seongwook HongAbstract:Angular Misalignment, defined as the tilted angle between the outer ring and inner ring, is unavoidable in most applications of tapered roller bearings (TBRs) due to many potential causes such as s...
Lihua Yang - One of the best experts on this subject based on the ideXlab platform.
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Characteristics of Duplex Angular Contact Ball Bearing with Combined External Loads and Angular Misalignment
Applied Sciences, 2020Co-Authors: Tengfei Xu, Lihua Yang, Kai WangAbstract:As a kind of common phenomenon in practical engineering, Misalignment error considerably changes the working performance of bearing. However, it has rarely attracted attention in the study of duplex Angular contact ball bearings (DACBBs). To evaluate the influence of Misalignment on DACBB, an analytical model of DACBB considering combined loads and Angular Misalignment is established for back-to-back, face-to-face, and tandem configurations. According to the geometrical relationship inside the bearing, the deformations caused by external load and Angular Misalignment are systematically analyzed. On this basis, the effects of external load, axial preload, and Angular Misalignment on the displacement, maximum contact load, contact load distribution, contact angle, and fatigue life of DACBB are analyzed. The results demonstrate the high dependence of the contact load and contact angle on the above factors. Angular Misalignment causes the fluctuation of contact load and contact angle distributions along the azimuth angle of a rolling ball. Nonlinear relationships between fatigue life of DACBB, Angular Misalignment, and axial preload are obtained. The occurrence of Angular Misalignment considerably decreases the fatigue life of DACBB. The results suggest the necessity of Angular Misalignment analysis for DACBB.
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Friction torque study on double-row tapered roller bearing
2019 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), 2019Co-Authors: Tengfei Xu, Lihua Yang, Yao WuAbstract:Double-row tapered roller bearings (DTRBs) are key components of rotating machineries due to its great advantages in load-carrying and stiffness. Friction torque is one of the major indicators used to evaluate the performance of rolling bearing because it directly related to the power loss and heat generation. Nevertheless, the friction torque of DTRB is not deeply studied in the available literatures, especially those consider the influence of Angular Misalignment and radial clearance. Therefore, in current paper, the friction torque of DTRB is thoroughly investigated under combined radial and thrust load according to the extended mechanical model of DTRB. The total friction torque is considered as the summation of EHL rolling friction torque, elastic hysteresis loss, sliding friction at rib-roller end contact and viscous drag friction of lubricant. The current work mainly considers the influences of three parameters: axial pre-deformation, initial radial clearance and Angular Misalignment on the friction torque of the first and the second row of DTRB. The results indicate that the friction torque of these two rows of DTRB are greatly determined by the above parameters. Regardless the first or the second row, friction torques are both increase with the increase of axial pre-deformation and positive/negative Angular Misalignment, while decrease with the increase of initial radial clearance. The analysis of friction torque for DTRB will provide some useful guidance for the applications of DTRB.
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mechanical behavior of double row tapered roller bearing under combined external loads and Angular Misalignment
International Journal of Mechanical Sciences, 2018Co-Authors: Lihua Yang, Tengfei Xu, Haoliang Xu, Yao WuAbstract:Abstract In actual engineering applications, single-row tapered roller bearing is usually assembled into double-row bearing to accommodate the heavy load conditions. The running safety and stability of machineries are highly determined by the characteristics of double-row tapered roller bearing. Therefore, the mechanical behavior of double-row tapered roller bearing is discussed in current work by extending the mathematical model of three degrees of freedom. A comprehensive analytical procedure for double-row tapered roller bearing in the presence of combined external loads and Angular Misalignment is proposed. Meanwhile, centrifugal load is considered based on the theory of three degrees of freedom. Unlike other researches, the external loads and Angular Misalignment are taken as the so-called mixed input parameters in current work to deal with the quasi-static equilibrium equations of double-row tapered roller bearing by using the iterative technique known as Newton-Raphson method. The resisting moment, contact loads and fatigue life of double-row tapered roller bearing under different loads are mainly studied in present work. Meanwhile, the comprehensive calculations demonstrate the effects of external loads, axial pre-deformation, bearing rotating speed, and Angular Misalignment on the characteristics of double-row tapered roller bearing. The results indicate that the Angular Misalignment and axial pre-deformation can highly influence the resisting moment. The contact state between roller and inner ring as well as the contact state between roller and guiding flange of bearing are remarkably affected by the factors aforementioned. Moreover, the fatigue life of double-row tapered roller bearing is dependent on the rotating speed, external loads, and Angular Misalignment in a large extent. The analytical method and results reveal the several important aspects of double-row tapered roller bearing in applications and thus would help the selection, design and assembling of the bearing.
Tengfei Xu - One of the best experts on this subject based on the ideXlab platform.
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Characteristics of Duplex Angular Contact Ball Bearing with Combined External Loads and Angular Misalignment
Applied Sciences, 2020Co-Authors: Tengfei Xu, Lihua Yang, Kai WangAbstract:As a kind of common phenomenon in practical engineering, Misalignment error considerably changes the working performance of bearing. However, it has rarely attracted attention in the study of duplex Angular contact ball bearings (DACBBs). To evaluate the influence of Misalignment on DACBB, an analytical model of DACBB considering combined loads and Angular Misalignment is established for back-to-back, face-to-face, and tandem configurations. According to the geometrical relationship inside the bearing, the deformations caused by external load and Angular Misalignment are systematically analyzed. On this basis, the effects of external load, axial preload, and Angular Misalignment on the displacement, maximum contact load, contact load distribution, contact angle, and fatigue life of DACBB are analyzed. The results demonstrate the high dependence of the contact load and contact angle on the above factors. Angular Misalignment causes the fluctuation of contact load and contact angle distributions along the azimuth angle of a rolling ball. Nonlinear relationships between fatigue life of DACBB, Angular Misalignment, and axial preload are obtained. The occurrence of Angular Misalignment considerably decreases the fatigue life of DACBB. The results suggest the necessity of Angular Misalignment analysis for DACBB.
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Friction torque study on double-row tapered roller bearing
2019 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), 2019Co-Authors: Tengfei Xu, Lihua Yang, Yao WuAbstract:Double-row tapered roller bearings (DTRBs) are key components of rotating machineries due to its great advantages in load-carrying and stiffness. Friction torque is one of the major indicators used to evaluate the performance of rolling bearing because it directly related to the power loss and heat generation. Nevertheless, the friction torque of DTRB is not deeply studied in the available literatures, especially those consider the influence of Angular Misalignment and radial clearance. Therefore, in current paper, the friction torque of DTRB is thoroughly investigated under combined radial and thrust load according to the extended mechanical model of DTRB. The total friction torque is considered as the summation of EHL rolling friction torque, elastic hysteresis loss, sliding friction at rib-roller end contact and viscous drag friction of lubricant. The current work mainly considers the influences of three parameters: axial pre-deformation, initial radial clearance and Angular Misalignment on the friction torque of the first and the second row of DTRB. The results indicate that the friction torque of these two rows of DTRB are greatly determined by the above parameters. Regardless the first or the second row, friction torques are both increase with the increase of axial pre-deformation and positive/negative Angular Misalignment, while decrease with the increase of initial radial clearance. The analysis of friction torque for DTRB will provide some useful guidance for the applications of DTRB.
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mechanical behavior of double row tapered roller bearing under combined external loads and Angular Misalignment
International Journal of Mechanical Sciences, 2018Co-Authors: Lihua Yang, Tengfei Xu, Haoliang Xu, Yao WuAbstract:Abstract In actual engineering applications, single-row tapered roller bearing is usually assembled into double-row bearing to accommodate the heavy load conditions. The running safety and stability of machineries are highly determined by the characteristics of double-row tapered roller bearing. Therefore, the mechanical behavior of double-row tapered roller bearing is discussed in current work by extending the mathematical model of three degrees of freedom. A comprehensive analytical procedure for double-row tapered roller bearing in the presence of combined external loads and Angular Misalignment is proposed. Meanwhile, centrifugal load is considered based on the theory of three degrees of freedom. Unlike other researches, the external loads and Angular Misalignment are taken as the so-called mixed input parameters in current work to deal with the quasi-static equilibrium equations of double-row tapered roller bearing by using the iterative technique known as Newton-Raphson method. The resisting moment, contact loads and fatigue life of double-row tapered roller bearing under different loads are mainly studied in present work. Meanwhile, the comprehensive calculations demonstrate the effects of external loads, axial pre-deformation, bearing rotating speed, and Angular Misalignment on the characteristics of double-row tapered roller bearing. The results indicate that the Angular Misalignment and axial pre-deformation can highly influence the resisting moment. The contact state between roller and inner ring as well as the contact state between roller and guiding flange of bearing are remarkably affected by the factors aforementioned. Moreover, the fatigue life of double-row tapered roller bearing is dependent on the rotating speed, external loads, and Angular Misalignment in a large extent. The analytical method and results reveal the several important aspects of double-row tapered roller bearing in applications and thus would help the selection, design and assembling of the bearing.
