Modeling angular contact ball bearing without raceway control hypothesis

Wang, Wenzhong; Hu, Lang; Zhang, Shengguang; Zhao, Ziqiang; Ai, Siyuan

doi:10.1016/j.mechmachtheory.2014.08.006

Cited by 92 publications

(44 citation statements)

References 23 publications

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“…The quasi dynamic model developed by Jones [6,7] and Harris [8,9] are commonly used nowadays, however it cannot be used to analyze combined radial and axial loads or time-varying operating conditions, both of which are important to analyze the motion in bearing system. Wang et al [11] developed a quasi-static analysis model without the raceway control assumption to analyze the performance of angular contact ball bearings under the combined action of radial, axial loads and the shaft tilting moment along with the consideration of the effects of centrifugal force and gyroscopic moments, and compared with the results from the raceway control theory, it indicated that for high-speed operations, outer raceway control hypothesis is appropriate. Boness and Gentle [12,13] also developed a quasi-static model of a ball bearing.…”

Section: Introductionmentioning

confidence: 99%

Investigation of skidding in angular contact ball bearings under high speed

Wang

Zhang

et al. 2015

Tribology International

110

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Section: Introductionmentioning

confidence: 99%

Investigation of skidding in angular contact ball bearings under high speed

Wang

Zhang

et al. 2015

Tribology International

110

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“…The dynamic characteristics of the components can be calculated through Eqs. (1)- (20), and the sound radiation from the sub-sources are obtained through Eqs. (21)- (24) at the field points can be analyzed through Eqs.…”

Section: Numerical Simulationsmentioning

confidence: 99%

“…The vibro-acoustic characteristics are more widely investigated based on dynamic models, in which the rotational and transitional interactions are described in differential equations [7]. The vibro-acoustic characteristics concerning the contact angles [8], surface roughness [9], external loads [10][11][12][13] and skidding effects [14][15][16] were analyzed, and the performances of inner rings and cages were usually selected as the evaluation indicators [15,[17][18][19][20][21]. The researches are based on the dynamic model of steel rolling bearings, and the findings are very useful for reference.…”

Section: Introductionmentioning

confidence: 99%

On the circumferential distribution of ceramic bearing sound radiation

Bai

Zhang³

2020

J Braz. Soc. Mech. Sci. Eng.

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This paper investigates the sound radiation of ceramic bearings based on the sub-source decomposition method. The circumferential distribution of the sound field that influences the acoustic performance and service life is selected as the indicator, and the calculation precision is verified by an experiment. Afterward, the rotation speed of the bearing is fixed, and the circumferential distributions of sound pressure levels are evaluated to show the variation in radial and axial directions. Results show that the sound radiation varies greatly in the circumference, and sound pressure levels in the lower semicircles are evidently greater than those in the upper semicircles. The trends of circumferential distribution and overall sound pressure levels are different in radial direction, but similar in axial direction. The peak angle is slightly skewed to the rotation direction in the lower semicircle, and also changes with radial and axial distances. The frequency results indicate the main frequency components in the sound radiation, and the variations are discussed from the point of source radiation. This work provides insights into predicting the acoustic performance of ceramic bearings, and can guide further research and development.

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“…Raceway control is not realistic as it is not possible that only pure rolling exists at non-zero contact angle at either of the races. It is, however, useful to estimate steady state results [18,20]; Wang et al [21] recently proposed a technique to remove the raceway control assumption.…”

Section: Bearing Element and Fluid Dynamicsmentioning

confidence: 99%

A Computational Fluid Dynamics Simulation of Oil–Air Flow Between the Cage and Inner Race of an Aero-engine Bearing

Adeniyi

Morvan

Simmons

2016

Journal of Engineering for Gas Turbines and Power

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Kathy (2017) A computational fluid dynamics simulation of oil-air flow between the cage and inner race of an aero-engine bearing. Journal of Engineering for Gas Turbines and Power, 139 (1). ISSN 1528-8919 Access from the University of Nottingham repository: http://eprints.nottingham.ac.uk/44726/1/GT2016-56927%20Adeniyi.pdf Copyright and reuse:The Nottingham ePrints service makes this work by researchers of the University of Nottingham available open access under the following conditions. This article is made available under the University of Nottingham End User licence and may be reused according to the conditions of the licence. For more details see: http://eprints.nottingham.ac.uk/end_user_agreement.pdf A note on versions:The version presented here may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the repository url above for details on accessing the published version and note that access may require a subscription. ABSTRACTIn aeroengines the shafts are supported on bearings that carry the radial and axial loads. A ball bearing is made up of an inner-race, an outer-race and a cage which contains the balls, these together comprise the bearing elements. The bearings require oil for lubrication and cooling. The design of the bearing studied in this work is such that the oil is fed to the bearing through holes/slots in the inner race. At each axial feed location the oil is fed through a number of equispaced feedholes/slots but there is different number of holes at each location. Once the oil has passed through the bearing it sheds outwards from both sides into compartments known as the bearing chambers.A number of studies have been carried out on the dynamics of bearings. Most of the analyses consider the contributions of fluid forces as small relative to the interaction of the bearing elements. One of the most sophisticated models for a cage-raceway analysis is based on the work of Ashmore et al. [1], where the cage-raceway is considered to be a short journal bearing divided into sectors by the oil feeds. It is further assumed that the oil exits from the holes and forms a continuous block of oil that exits outwards on both sides of the cage-raceway. In the model, the Reynolds equation is used to estimate the oil dynamics.Of interest in this current work is the behaviour of the oil and air within the space bounded by the cage and inner race. The aim is to determine whether oil feed to the bearing can be modelled as * seconded from the University of Ilorin, Nigeria † Address all correspondence to this author.coming from a continuous slot or if the discrete entry points must be modelled. A Volume of Fluid Computational Fluid Dynamics approach is applied. A sector of a ball bearing is modelled with a fine mesh and the detailed simulations show the flow behaviour for different oil splits to the three feed locations of the bearing thus providing information useful to understanding oil shedding into the ...

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Modeling angular contact ball bearing without raceway control hypothesis

Cited by 92 publications

References 23 publications

Investigation of skidding in angular contact ball bearings under high speed

Investigation of skidding in angular contact ball bearings under high speed

On the circumferential distribution of ceramic bearing sound radiation

A Computational Fluid Dynamics Simulation of Oil–Air Flow Between the Cage and Inner Race of an Aero-engine Bearing

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