Numerical Investigation of the Effect of Ball Bearing Geometry on Oil Film Damping Due to Lubricated Contact at Different Loads
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DOI: 10.1007/978-981-16-0942-8_2
Abstract: The vibration response of any system, especially at resonance, is strongly influenced by its damping characteristics. It is thus often strived to improve the damping properties of machineries to suppress the vibration level and its… read more here.
Keywords: ball bearing; oil film; film damping; geometry ... See more keywords
Nonlinear response analysis for a dual-rotor system supported by ball bearing
Sign Up to like & getrecommendations! Published in 2021 at "International Journal of Non-linear Mechanics"
DOI: 10.1016/j.ijnonlinmec.2020.103627
Abstract: Abstract Rolling element bearings are used as main supports and are key sources of vibrations for aero-engine rotor systems. Mainly including the inner and outer rings, cages, and balls or rollers, the complicated mechanical structures… read more here.
Keywords: dual rotor; rotor system; system; ball bearing ... See more keywords
Ball bearing defect models: A study of simulated and experimental fault signatures
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Sound and Vibration"
DOI: 10.1016/j.jsv.2017.04.010
Abstract: Abstract Numerical model based virtual prototype of a system can serve as a tool to generate huge amount of data which replace the dependence on expensive and often difficult to conduct experiments. However, the model… read more here.
Keywords: fault; bearing defect; defect models; ball bearing ... See more keywords
Effect of preload on ball-raceway contact state and fatigue life of angular contact ball bearing
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DOI: 10.1016/j.triboint.2017.04.029
Abstract: Abstract The performance of angular contact ball bearing is greatly affected by the preload. In the present research, by analyzing the state of ball-raceway contact, a quasi-dynamic model is proposed to study the load distribution… read more here.
Keywords: contact; ball bearing; preload; ball ... See more keywords
Determinations of thermoelastic instability for ball-bearing-like specimens with spacers and in grease lubrications
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DOI: 10.1016/j.triboint.2020.106415
Abstract: Abstract Frictional torque jump is present at ball-bearing-like specimens in grease lubrications, it is formed to be bearing instabilities at a time dependent on bearingʹs groove factor, raceway's roughness. Intrinsic mode functions for vibrations are… read more here.
Keywords: bearing like; ball bearing; grease lubrications; like specimens ... See more keywords
Experimental study on dynamic behavior of ball bearing cage in cryogenic environments, Part I: Effects of cage guidance and pocket clearances
Sign Up to like & getrecommendations! Published in 2019 at "Mechanical Systems and Signal Processing"
DOI: 10.1016/j.ymssp.2018.06.018
Abstract: Abstract In cryogenic environments, it is not possible to apply oil or grease to ball bearings, owing to the extreme temperature conditions. Thus, polytetrafluoroethylene (PTFE) cages are used as solid lubricants in such environments, because… read more here.
Keywords: ball; pocket; cage; ball bearing ... See more keywords
Theoretical and experimental approach to ball bearing frictional characteristics compared with cryogenic friction model and dry friction model
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DOI: 10.1016/j.ymssp.2019.01.056
Abstract: Abstract In previous studies on cryogenic ball bearings, a friction model of solid lubrication characteristics was employed with the assumption that the low dynamic viscosity of cryogenic fluids is negligible. A traction curve was then… read more here.
Keywords: friction model; friction; model; dry friction ... See more keywords
Experimental and theoretical investigations of heat generation in radial ball bearing
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DOI: 10.1080/01430750.2019.1611635
Abstract: The purpose of a radial ball bearing (RBB) is to support radial loads and to reduce the rotational friction. However, during its operating conditions, an unanticipated and vicious heating of balls in RBB takes place… read more here.
Keywords: heat; radial ball; heat generation; ball bearing ... See more keywords
Radial load distribution by balls in a ball bearing with variable clearance
Sign Up to like & getrecommendations! Published in 2021 at "Mechanics Based Design of Structures and Machines"
DOI: 10.1080/15397734.2021.1930557
Abstract: Clearance in ball bearing influences the startup torque and stiffness of bearing and affects the load distribution, load carrying capacity, and life of bearing. The present work is related to deep ... read more here.
Keywords: ball bearing; bearing; load distribution; clearance ... See more keywords
Kinematic investigation and fatigue life analysis of angular contact ball bearing in wide speed range based on raceway friction
Sign Up to like & getrecommendations! Published in 2020 at "Industrial Lubrication and Tribology"
DOI: 10.1108/ilt-01-2020-0030
Abstract: The purpose of this paper is to clarify the relationship between fatigue life and kinematics of angular contact ball bearing. It proposes a new modeling method of spin to roll ratio based on raceway friction,… read more here.
Keywords: ball bearing; angular contact; contact ball; fatigue life ... See more keywords
On the dynamic characteristics of ball bearing with cage broken
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DOI: 10.1108/ilt-01-2020-0042
Abstract: The purpose of this study is to investigate the dynamic behavior of the ball bearing with cage broken.,By analyzing the complicated relationship and interactions among the ball bearing elements, the dynamic modelling of the ball… read more here.
Keywords: bearing cage; ball bearing; broken cage; cage ... See more keywords