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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/11959
Title: Non-linear dynamic response analysis of cylindrical roller bearings due to rotational speed
Authors: Patra P.
Saran V.H.
Harsha S.P.
Published in: Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics
Abstract: The dynamic behaviour of cylindrical roller bearings is presented, in both balanced and unbalanced conditions as a function of speed. The stiffness and damping non-linearities at the contact points (due to Hertzian contact force between rollers and races), radial internal clearance and unbalanced rotor force make the bearing system non-linear. Presently, the differential equations representing the dynamics of the cylindrical roller bearings have been obtained using Lagrange’s equation and solved numerically using modified Newmark-β method. The results of the analyses of various motion behaviours are presented as time–displacement responses, orbit plots, phase portraits, Poincaré maps and Fast Fourier Transform plots. The obtained responses revealed the sensitive behaviour of the system from periodic to quasi-periodic and chaotic with speed variations for both balanced and unbalanced rotor conditions. Also, intermittent chaotic behaviour has been observed. A pattern of the interaction between rotational and variable compliance vibration is observed with speed variations. The frequency pattern analysis (with different techniques used like phase/orbit plots and Poincaré plots) for healthy cylindrical bearing and different rotor conditions under different applied non-linearity consideration is a new attempt to analyse dynamic behaviour of the bearing. This analysis is helpful for online monitoring of fault-free cylindrical roller bearings and for studying the impact of speed on system’s dynamical behaviour. © 2018, IMechE 2018.
Citation: Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics (2018), (): -
URI: https://doi.org/10.1177/1464419318762678
http://repository.iitr.ac.in/handle/123456789/11959
Issue Date: 2018
Publisher: SAGE Publications Ltd
Keywords: Balance and unbalance rotor
modified Newmark- β method
radial internal clearance
rotor frequency
variable compliance vibration
ISSN: 14644193
Author Scopus IDs: 57201342669
6507475582
6603548398
Author Affiliations: Patra, P., IIT Roorkee, Department of Mechanical and Industrial Engineering, Roorkee, India, India
Saran, V.H., IIT Roorkee, Department of Mechanical and Industrial Engineering, Roorkee, India, India
Harsha, S.P., IIT Roorkee, Department of Mechanical and Industrial Engineering, Roorkee, India, India
Corresponding Author: Patra, P.India; email: prava.dme2016@iitr.ac.in
Appears in Collections:Journal Publications [ME]

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