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optimum ball motion in thrust-loaded angular contact bearings with coulomb friction

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  • Ball Motion in Thrust-Loaded, Angular Contact

    Ball Motion in Thrust-Loaded, Angular Contact Bearings With Coulomb Friction T. A. Harris Analytical Services Department, SKF Industries, Inc., King of Prussia, Pa.

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  • Ball motion in thrust loaded ball bearings -

    1975-11-1 · References 1 A. Jones, Ball motion and sliding friction in ball bearings, J. Basic Eng., 31 (l) (1959)1-12. 2 T. Harris, An analytical method to predict skidding in thrust loaded, angular contact ball bearings, ASME paper No 70 - LUB S - 7. 3 R. J. Boness and J. J. Chapman, Measurement and analysis of ball motion in high speed, deep groove ball ...

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  • Quasi-static Analysis of Thrust-loaded Angular Contact ...

    2017-8-28 · Quasi-static Analysis of Thrust-loaded Angular Contact Ball Bearings Part I: Theoretical Formulation CHEN Wenhua 1, 2, *, MA Zikui1, GAO Liang1, LI Xinglin3, and PAN Jun2 1 Institute of Mechanical Design, Zhejiang University, Hangzhou 310027, China 2 Institute of Mechanical Design and Manufacturing, Zhejiang Sci-Tech University, Hangzhou 310018 ...

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  • References - CiteSeerX

    2 Jones, A. B., 'Ball Motion and Sliding Friction in Ball Bear­ ... 4 Harris, T. A., 'Ball Motion in Thrust-Loaded Angular Contact Bearings With Coulomb Friction,' JOURNAL OP LUBRICATION TECH­ ... Thrust-Loaded Angular Contact Ball Bearings,' JOURNAL OF LU­ ...

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  • Quasi-static analysis of thrust-loaded angular contact ...

    2012-1-20 · JONES A B. Ball motion and sliding friction in ball bearings[J]. Journal of Basic Engineering, 1959, 81(3): 1–12. Google Scholar [2] HARRIS T A. Ball motion in thrust-loaded, angular contact bearings with Coulomb friction[J]. Journal of Lubrication Technology, 1971, 93(1): 32–38. Article Google Scholar [3]

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  • [PDF] Ball Motion and Sliding Friction in an Arched

    The motion of the ball and sliding friction in an arched outer race ball bearing under thrust loads is determined. Fatigue life evaluations were made. The analysis is applied to a 150 millimeter bore ball bearing. The results indicated that for high speed-light load applications the arched bearing has significant improvement in fatigue life over that of a conventional bearing.

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  • Research on the Influence of Clearance Variation on

    2020-9-3 · Determination of Optimum Preload Considering the Skidding and Thermal Characteristic of High-Speed Angular Contact Ball Bearing ... 26. Harris, T. A., 1971, “ An Analytical Method to Predict Skidding in Thrust-Loaded, Angular-Contact Ball Bearings,” ASME J. Lubr. Technol., 93 (1), pp. 17 – 23. 10.1115/1.3451511. Google Scholar. Crossref ...

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  • Multi-Body Contact Dynamics Analysis of Angular

    The 3-D multi-body contact dynamics simulation model was built by ADAMS base on the Hertz contact theory and multi-body contact dynamics, which considered the dynamics relationship among the ball, ring and cage of the bearing. Considering the clearancesfrictions and loads, results that contained deformation and displacement of the bearing, trajectory of the CM of the cage and the dynamic ...

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  • Lubrication and Thermal Failure Mechanism Analysis

    2017-12-20 · In this paper, the effects of the applied load and bearing rotational speed on the lubrication performance in an angular contact ball bearing are conducted, which combines the bearing dynamic analysis and thermo-elastohydrodynamic lubrication (TEHL) analysis.

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  • An analytical model to investigate skidding in rolling ...

    2012-8-23 · Skidding, which occurs in rolling element bearings during shaft rotational acceleration, causes wear and incipient failure. This paper presents an analytical model to investigate skidding during rolling element bearing acceleration, taking account of the contact force and friction force between the rolling elements and the races and the cage, gravity, and the centrifugal force of the rolling ...

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  • Calaméo - Koyo Ball And Roller Bearings

    2021-5-26 · • Angular contact ball bearings are often preloaded to enhance their rigidity and rotating performance. For high-precision matched pair angular contact ball bearings of class 5 or higher, which are used in machine tools and other precision equipment, the standard preload is specified in three levels: light (L), medium (M) and heavy (H).

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  • Transactions of the Japan Society of Mechanical

    In this study, friction characteristics of the linear ball guides are measured by using a core-less linear motor. As a result of the mathematical analysis, it have been confirmed that the friction force of the guides can be measured as a thrust force command in the experimental system.

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  • IOP Conference Series: Materials Science and

    2017-12-14 · The optimum process was spray current of 120A, voltage of 36, gas pressure of 0.7MPa and distance of 160mm. The porosity of coatings prepared in this spray process was only 2.11%. The coatings were composed of TiB2, TiC0.3N0.7, TiN, Al2O3 and AlN.

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  • (PDF) Combined numerical and experimental

    Poor tribo- ment.15,16,19,20 The micro-hydrodynamic effect is logical conditions invariably occur at contact analogous to the pressure perturbations in natural reversals, where lack of any relative sliding motion mammalian joints,6 which improve the contact load- of the mating surfaces results in the momentary ces- carrying capacity.13 In fact ...

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  • IOP Conference Series: Materials Science and

    2016-10-11 · Surface and contour plots developed from regression equation are used to optimize the processing parameters for maximizing the weld bead depth. Optimum values of Ip, I b and HZ are obtained as 259 A, 120 A and 8 Hz respectively. Using this optimum condition, maximum bead depth of the weld is predicted to be 4.325 mm.

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  • (PDF) Mechanical Design Lectures By: Dr. Saad

    (11–7), p. 558, assuming a ball bearing with a = 3 and L = 2.8 ×106 rev, A check on the Internet for available bearings (www.globalspec.com is one good starting place) shows that this load is relatively high for a ball bearing with Lectures on Design of Machine Systems II By: Dr. Saad Mahmood Ali Page 21 Lectures (60-62) Power Transmission ...

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  • References for Tribology References Quarterly Upload

    2017-3-16 · Enhancing Oil/Water Emulsion Stability: The Use of Capillary Contact Angle Measurements to Determine Liquid/Liquid Interfacial Tensions between Aqueous Alkanolamine Solutions and Oils Volume 52 Issue 4 2009 Interference-Fit Life Factors for Roller Bearings Measurement and Analysis of Inlet Oil Film Thickness in Cold Sheet Rolling with Oil-in ...

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  • Senior Physics - Extended Experimental Investigations

    2021-3-15 · Weight is a function of how each component of the rocket is designed. The lighter the rocket is, the higher it will be able to go all else being equal. Thrust is generated by the rocket's motor. The more thrust the motor produces, the higher it will go. However, …

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  • Transactions of the JSME (in Japanese)

    This rotor model considers both slipping and rolling conditions in the contact at the backup bearing, and evaluates the transition phenomenon between them. The followings are clarified. The slipping forward whirling motion occurs when the friction coefficient is small. The rolling whirling motion occurs when the friction coefficient is large.

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  • Calaméo - Koyo Ball And Roller Bearings

    2021-5-26 · • Angular contact ball bearings are often preloaded to enhance their rigidity and rotating performance. For high-precision matched pair angular contact ball bearings of class 5 or higher, which are used in machine tools and other precision equipment, the standard preload is specified in three levels: light (L), medium (M) and heavy (H).

    Get Price
  • Finite element modeling of ballscrew feed drive

    This thesis details a scheme, based on finite element methods, for modeling of the ballscrew drives of Cartesian-configured machine tools. Using this scheme, the structural dynamics of the ballscrew mechanism can be incorporated into the feed drive model, and thereby considered during high-bandwidth controller design, and interactive simulation of feed drive-controller performance in the ...

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  • JournalTOCs

    Contact of balls in screw nuts and bearings causes the nonlinearity of a ball screw feed system. The identification of nonlinear stiffness helps to understand and control the feed system. The axial vibration of the ball screw feed system can be descripted by a single-degree-of-freedom (SDOF) system with polynomial nonlinear terms.

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  • Machine Design 0070647887, 9780070647886 -

    This method is used when the two connected rods permit an angular motion between them, e.g. a crank and the connecting rod or a piston and the connecting rod in an I-C engine. WORKED EXAMPLES n n n n n n n 5.1 Design a sleeve and double cotter joint for carrying an …

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  • Course Catalog | School of Engineering - Shiv Nadar

    2021-5-29 · Data management has been becoming increasingly critical to derive value to existing applications and services. This course is designed to cover advanced concepts of data management including (but not limited to) concurrency control, transaction management, query processing, indexing, mobile data management, spatial databases, as well as handling WWW & social media data.

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  • Recent papers in Proceedings of the Institution of ...

    2014-3-4 · For lightly loaded bearings, the friction coefficient of the bearing increased with the increase in Reynolds number. July 07, 2016 doi: 10.1177/1350650116657757 open full text Influence of couple stress lubricant on the performance of textured two-lobe slot-entry hybrid journal bearing system.

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  • Senior Physics - Extended Experimental Investigations

    2021-3-15 · Weight is a function of how each component of the rocket is designed. The lighter the rocket is, the higher it will be able to go all else being equal. Thrust is generated by the rocket's motor. The more thrust the motor produces, the higher it will go. However, …

    Get Price
  • Friction Wear Lubrication A Textbook in Tribology -

    Sketch of Euler’s description of friction. Coulomb (1736–1806), a French physicist-engineer, said friction was due to the interlocking of asperities. ... and Mamin show that for heavily loaded contact, such as in metal cutting, the friction stress may approach the simple shear strength of the substrate.5 Apparently in heavily loaded contact ...

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  • Introduction to Robotics: Mechanics and Control

    In Chapter 6, we develop dynamic equations of motion, which may be used to control or simulate the motion of manipulators. 2 We use joint actuators as the generic term for devices that power a manipulator—for example, electric motors, hydraulic and pneumatic actuators, and muscles. 9 10 Chapter 1 Introduction V A t3 t1 t2

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  • Publications – Autonomous Systems Lab | ETH Zurich

    Finally, we present a framework to generate complex motions for our robot set-up. Tasks relevant for use-wear analysis are characterized by contact switches and frictional contacts. Our approach aims for trajectory optimization with a soft contact model and regularized Coulomb friction to mimic contact interactions of the robot arm with the ground.

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  • AC²T · Conference publications

    Hsu C.-J., Gocerler H., Mücklich F., Gachot C.: Tribological and mechanical performance evaluation of ZDDP antiwear tri-bofilm on cylindrical thrust roller bearings, book of …

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  • Jaypee University Anoopshahr

    BALL BEARING : Deep groove radial bearing, Angular contact bearing Thrust ball bearing, Geometry and kinematics, Stress and deformation, Load capacity, Prediction of fatigue life, Lubrication. LAWS OF FRICTION : Friction theory, Friction heating, Effect of sliding speed on friction, Classification of wear, Mechanism of wear.

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  • IFTOMM - rotordynamics

    2019-2-21 · IFToMM 2018 Analysis of a Rotor Supported by Angular Contact Ball Bearings under EHD lubrication. Carrer, Laís, Bizarre, Letícia, Cavalca, Katia Lucchesi IFTOMM2018-0013 IFToMM 2018 Residual modal unbalance evaluation method by mode shape weighted optimization L'vov, Max, Lacombe, Bernd IFTOMM2018-0014

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  • Machine Design 0070647887, 9780070647886 -

    This method is used when the two connected rods permit an angular motion between them, e.g. a crank and the connecting rod or a piston and the connecting rod in an I-C engine. WORKED EXAMPLES n n n n n n n 5.1 Design a sleeve and double cotter joint for carrying an …

    Get Price
  • 75470033 Mechanical Engineering [zg0rpd257wlk]

    The ball is a single, usually metal sphere, sliding within a bored cylinder, against the pressure of a spring, which pushes the ball against the other part of the mechanism, which carries the detent - which can be as simple as a hole of smaller diameter than the ball.

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  • Introduction to Robotics: Mechanics and Control

    In Chapter 6, we develop dynamic equations of motion, which may be used to control or simulate the motion of manipulators. 2 We use joint actuators as the generic term for devices that power a manipulator—for example, electric motors, hydraulic and pneumatic actuators, and muscles. 9 10 Chapter 1 Introduction V A t3 t1 t2

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  • Fundamentals of Engineering Tribology with

    Contents List of Figures List of Tables Preface Acknowledgments Nomenclature 1. Introduction 1.1 Defining Tribology 1.1...

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  • Calaméo - IKO - Linear Motion Rolling Guide Series -

    2021-5-18 · Publishing platform for digital magazines, interactive publications and online catalogs. Convert documents to beautiful publications and share them worldwide. Title: IKO - Linear Motion Rolling Guide Series - RED, Author: Bianchi, Length: 180 pages, Published: 2012-11-14

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  • Publications – Autonomous Systems Lab | ETH Zurich

    Finally, we present a framework to generate complex motions for our robot set-up. Tasks relevant for use-wear analysis are characterized by contact switches and frictional contacts. Our approach aims for trajectory optimization with a soft contact model and regularized Coulomb friction to mimic contact interactions of the robot arm with the ground.

    Get Price
  • Bearing Design in Machinery | Bearing (Mechanical) |

    2017-7-6 · Certain bearings, such as conical roller bearings, shown in Fig. 1-1, or angular ball bearings, can support radial as well as thrust forces. Certain other bearings, however, such as hydrodynamic journal bearings, are applied only for radial loads, while the hydrodynamic thrust bearing supports

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  • Physics for Engineers and Scientists [PDF] - Free

    (6.1), the magnitude of the friction force is then fk fk k N 0.8 mg x O Since this friction force is the only horizontal force on the automobile, the decel- w eration of the automobile along the street is Skidding motion is opposed by kinetic friction. fk 0.8 mg ax 0.8 g 0.8 9.8 m /s2 m m FIGURE 6.3 Free-body diagram for an 8 m /s2 2.

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  • ICA2010: 20th International Congress on Acoustics,

    2011-3-20 · The motion of an acoustic source relative to some fixed frame produces a Doppler shifting of the source frequency at a fixed point relative to that frame. For linear motion of the source greater than the speed of sound, the radiated sound forms a shock wave whose angle relative to the direction of motion varies with source speed.

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  • Kinematics and Mechanisms | Wear | Friction

    2013-4-2 · EHD lubrication is most readily induced in heavily loaded contacts (such as machine elements of low geometrical conformity), where loads act over relatively small contact areas (on the order of one-thousandth of journal bearing), such as the point contacts of ball bearings and the line contacts of roller bearings and gear teeth.

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  • MARINE ENGINEERING KNOWLEDGE BY RAJAN -

    a. 100% contact on uneven surfaces . b. Cheaper to install as no hand fitting is required . c. Don’t corrode and are resistant to most of the chemicals . d. As they achieve good contact, there is little chance of fretting, thus cheaper, shorter, non resilient bolts can be used. These permit a reduction in the bolt tension by a . factor of 4 . e.

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  • Industriial Autommation Textbook | Automation |

    2020-5-8 · Das Auto notizch

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  • Fundamentals of Engineering Tribology with

    Contents List of Figures List of Tables Preface Acknowledgments Nomenclature 1. Introduction 1.1 Defining Tribology 1.1...

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