Influence of unbalance levels on nonlinear dynamics of a rotor-backup rolling bearing system

Fonseca, Cesar Augusto; Santos, Ilmar; Weber, Hans Ingo

doi:10.1016/j.jsv.2017.01.020

Cited by 24 publications

(11 citation statements)

References 22 publications

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“…Studying the nonlinear behaviour of the system and identifying the influence of rolling element bearing parameters on the nonlinear behaviours of the rotor system will help to reasonably avoid system instability, increase the operating life, and improve the efficiency of mechanical equipment [10]. us, the rolling bearing supported rotor systems have drawn many research interests [11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Analysis on Multimode Nonlinear Resonance of an Asymmetric Rolling Bearing Rotor with the Application of a Squeeze Film Damper

Chen

Zhong

et al. 2021

Shock and Vibration

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Section: Introductionmentioning

confidence: 99%

Analysis on Multimode Nonlinear Resonance of an Asymmetric Rolling Bearing Rotor with the Application of a Squeeze Film Damper

Chen

Zhong

et al. 2021

Shock and Vibration

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“…It is observed that the amplitude of vibration of the supporting body in resonance condition reduces after increasing the unbalance mass. Fonseca et al 13 studied the rotor unbalance and rotor drops in active magnetic bearings. Due to contact of rotor with inner race of back up bearing and the presence of these two phenomena leads to the chaotic motion.…”

Section: Introductionmentioning

confidence: 99%

A Model To Estimate Synchronous Vibration Amplitude For Detection of Unbalance in Rotor-Bearing System

Jamadar¹

2021

The International Journal of Acoustics and Vibration

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A numerical technique for detection of unbalance magnitude of a rotor-bearing system is proposed and verified by experimental analysis. Dimensional analysis is used for development of mathematical model of an unbalanced rotor-bearing system following rigid rotor approach. A developed mathematical model is solved by factorial regression analysis method using the experimental data obtained by a Box-Behnken design. The proposed approach integrates the rotor parameters, disc parameters, bearing parameters and operating conditions with the synchronous vibration amplitude. Confirmation experiments are conducted using Taguchi design methodology with unbalance mass, rotor speed, mass eccentricity and radial load as parameters with different levels assigned to them.

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“…e experimental output result verified the various periodic-impact motions of the system. Muvengei et al [34][35][36][37] conducted dynamic experiments on mechanical systems, such as slider-crank mechanism, gear transition, and rotor-bearing system, to further reveal the matching rules of dynamic parameters and nonlinear response characteristics.…”

Section: Introductionmentioning

confidence: 99%

Effects of Differently Located Clearance on the Dynamic Responses of a Two‐Degree‐of‐Freedom Vibration System

Yang

Luo

2021

Shock and Vibration

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The mechanical model of a two-degree-of-freedom forced harmonic vibration system with multiclearance rigid constraints is established, considering the location schemes of symmetrical both-sided clearance and asymmetrical multiple clearance. Existence domains, correlative distributions, and bifurcation scenarios of periodic vibrations are analyzed using multiparameter and multiperformance cosimulation. Pattern diversity, distribution, and occurrence mechanism of the subharmonic impact motion sequences in the tongue-shaped transition regions among the neighboring fundamental periodic motions of the vibration systems are investigated. The emergent behavior of sticking process of fundamental periodic vibration, the occurrence law of chattering-impact motion, and the interaction of different modes of sticking are discussed. According to the sampling ranges of parameters, three multiple heterogeneous constraint conditions are explored; the effects of differently clearance location and values on the dynamic responses and the transition region of fundamental periodic vibrations and subharmonic motions are particularly analyzed. Hence, the reasonable clearance arrangement scheme and numerical optimization combination are determined and the ideal parameter domain of the vibration system is obtained.

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Influence of unbalance levels on nonlinear dynamics of a rotor-backup rolling bearing system

Abstract: and fall again, impacting on the inner race innumerable times without reaching a steady state. Finally the presented results are discussed from the point of view of nonlinear dynamics applied to the practical use.

Cited by 24 publications

References 22 publications

Analysis on Multimode Nonlinear Resonance of an Asymmetric Rolling Bearing Rotor with the Application of a Squeeze Film Damper

Analysis on Multimode Nonlinear Resonance of an Asymmetric Rolling Bearing Rotor with the Application of a Squeeze Film Damper

A Model To Estimate Synchronous Vibration Amplitude For Detection of Unbalance in Rotor-Bearing System

Effects of Differently Located Clearance on the Dynamic Responses of a Two‐Degree‐of‐Freedom Vibration System

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