Nonlinear dynamic analysis of cylindrical roller bearing with flexible rings

Autor: Alexandre Leblanc, Cyril Defaye, Daniel Nelias
Přispěvatelé: Laboratoire de Mécanique des Contacts et des Structures [Villeurbanne] (LaMCoS), Institut National des Sciences Appliquées de Lyon (INSA Lyon), Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Colin, Anne-Marie
Rok vydání: 2009
Předmět:
Engineering
Acoustics and Ultrasonics
Differential equation
media_common.quotation_subject
Traction (engineering)
[PHYS.MECA.GEME]Physics [physics]/Mechanics [physics]/Mechanical engineering [physics.class-ph]
Geometry
02 engineering and technology
Inertia
01 natural sciences
law.invention
0203 mechanical engineering
law
0103 physical sciences
[SPI.MECA.GEME] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanical engineering [physics.class-ph]
010301 acoustics
ComputingMilieux_MISCELLANEOUS
media_common
Bearing (mechanical)
business.industry
[PHYS.MECA.GEME] Physics [physics]/Mechanics [physics]/Mechanical engineering [physics.class-ph]
Mechanical Engineering
Mechanics
Condensed Matter Physics
[SPI.MECA.GEME]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanical engineering [physics.class-ph]
Nonlinear system
020303 mechanical engineering & transports
Mechanics of Materials
Harmonics
Ball (bearing)
Lubrication
business
Zdroj: Journal of Sound and Vibration
Journal of Sound and Vibration, Elsevier, 2009, 325 (1-2), pp.145-160
ISSN: 0022-460X
1095-8568
Popis: A nonlinear plan dynamic model for cylindrical bearings has been developed, predicting the interaction forces between the retainers and the rolling elements. Roller–race contacts are analyzed in detail and resulting forces and moments are determined. An elastohydrodynamic lubrication (EHL) model provides the traction components while a hydrodynamic formulation is used for the roller–cage interactions. Structural deformations of the rings are included in the geometrical equations linking the relative displacements between rings. The Newmark type implicit integration technique coupled with the Newton–Raphson method is used to solve the differential equation system iteratively. Time displacements and theirs FFT are used to illustrate and elucidate the diversity of the system response. Computations performed when considering the structural deformations of the rings show a low frequency shift, as higher harmonics are attenuated while the first are more pronounced. With an unbalanced rotor, the ball pass frequency (BPF) is modulated with this perturbation leading to an aperiodic response. This is particularly true for the counter-rotating bearing investigated. Finally, results for different cage materials show a significant influence only on the cage center location, whereas the inertia moment of the cage is of little impact on the global dynamics behavior.
Databáze: OpenAIRE
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