Dynamic stability and nonlinear vibration analysis of a rotor system with flexible/rigid blades

Bab, Saeed; Khadem, S.E.; Abbasi, Amirhassan; Shahgholi, Majid

doi:10.1016/j.mechmachtheory.2016.07.026

Cited by 24 publications

(4 citation statements)

References 26 publications

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“…Recently, multiple-scale analysis was used for vibration analysis of piezoelectrically actuated microbeam with nonideal boundary conditions [9] or for nonlinear vibration analysis of mechanical systems with multiple joint clearances [10], in which a sliding pendulum is subjected to analysis. In [11], the method of multiple scales serves for primary resonance analysis of dynamic stability and nonlinear vibrations in a rotor system both with flexible and rigid blades. Stability and bifurcation analysis for the Kaldor-Kalecki model of business cycle with a discrete delay and a distributed delay is studied in [12], where the method is used for finding the explicit formulae determining the direction of Hopf bifurcation and the stability of bifurcating periodic solutions.…”

Section: Multiple-scale Analysismentioning

confidence: 99%

Influence of selected parameters on oscillatory behaviour of dynamical system

Šútova¹,

Vrabel²,

Liska³

et al. 2016

ijma

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Section: Multiple-scale Analysismentioning

confidence: 99%

Influence of selected parameters on oscillatory behaviour of dynamical system

Šútova¹,

Vrabel²,

Liska³

et al. 2016

ijma

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“…Bab, Khadem, Abbasi and Shahgholi. [33] investigated dynamic stability and nonlinear vibration analysis of a rotor system with flexible/rigid blades. They improved the method using numerical method.…”

Section: Introductionmentioning

confidence: 99%

Vibration Behavior of Misaligned Rotor with the Asymmetric Shaft Using Theory of Timoshenko Beam

Jafari

Jamshidi

2022

Scientia Iranica

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“…Qiao and Zhu studied the unbalanced vibration of the grinding wheel and provided a theoretical basis for dynamic balance [7]. Bab et al studied the influence of mass eccentricity and surrounding medium damping on the steady-state response of the system [8]. Yue et al found that mass eccentricity can increase the rotor vibration and weaken the influence of unbalanced magnetic pull and make the vibration tend to be regular [9].…”

Section: Introductionmentioning

confidence: 99%

Study on the Unbalanced Fault Dynamic Characteristics of Eccentric Motorized Spindle considering the Effect of Magnetic Pull

Wang

et al. 2021

Shock and Vibration

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Unbalanced fault is the most common fault of high-speed motorized spindle, which is the main factor affecting the machining accuracy of high-speed spindle. Due to the unbalanced magnetic pull produced by the air gap eccentricity of the stator and rotor, the unbalanced vibration of the motorized spindle will be further aggravated. In order to explore the dynamic behavior and motion law of the unbalanced fault motorized spindle under the eccentric state, a dynamic model of the unbalanced fault of the high-speed motorized spindle considering the unbalanced magnetic pull was established. Taking the eccentric motorized spindle customized by the research group as the research object, the dynamic model is established, simulated, and analyzed, and the response change law of motorized spindle under the effect of different speed, unbalance, and air gap is obtained. The simulation results show that the unbalanced magnetic pull caused by static eccentricity will increase the unbalanced vibration of motorized spindle, and the unbalanced vibration will also increase with the increase of static eccentricity. The vibration caused by unbalanced magnetic pull does not increase with the increase of rotating speed. In frequency-domain analysis, when there is unbalanced magnetic pull, the peak appears at 0 Hz, and the amplitude of fundamental frequency vibration will increase with the increase of eccentricity. The experimental results show that the greater the eccentricity is, the greater the unbalance vibration of the motorized spindle is. The experimental results are consistent with the simulation results, which further verify the accuracy of the model. The research results lay a theoretical basis for fault analysis and diagnosis of coupling fault motorized spindle.

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Dynamic stability and nonlinear vibration analysis of a rotor system with flexible/rigid blades

Cited by 24 publications

References 26 publications

Influence of selected parameters on oscillatory behaviour of dynamical system

Influence of selected parameters on oscillatory behaviour of dynamical system

Vibration Behavior of Misaligned Rotor with the Asymmetric Shaft Using Theory of Timoshenko Beam

Study on the Unbalanced Fault Dynamic Characteristics of Eccentric Motorized Spindle considering the Effect of Magnetic Pull

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