Flow-Coupled Vibrations of Rotor and Seal

Akhmetkhanov, R. S.; Banakh, L. Ya.; Никифоров, А. Н.

doi:10.1177/1077546305054857

Cited by 10 publications

(4 citation statements)

References 1 publication

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“…Li et al (2003) employed Muszynska's model to describe steam excitation force in labyrinth seals, calculated periodic solutions of a Jeffcott rotor system based on shooting procedure and analyzed its stability (Bently and Muszynska, 1988;Li, 2003). Akhmetkhanov et al (2005) studied the steam excitation of an unbalanced rotor and analyzed the dynamic behaviors for both non-impact and impact regimes. Hua et al (2005) built the nonlinear model of the rotor-seal system with Muszynska's seal forces.…”

Section: Introductionmentioning

confidence: 99%

Research into the dynamic coefficient of the rotor-seal system for teeth-on-stator and teeth-on-rotor based on an improved nonlinear seal force model

Jing

2013

Journal of Vibration and Control

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It is well known that seal force has a great influence on dynamic coefficients of the rotor-seal system and Muszynska's model is employed by many scholars to research the seal system. But the rotor-seal system has larger eccentricity ratio, Muszynska's model will not describe the characteristics of the rotor-seal system well. So a more accurate model is critical for describing the seal force. An improved nonlinear model of a rotor-seal system is proposed for describing seal force of the rotor-seal system based on the two-control-volume model and rotor motion equation. This model can not only solve the larger eccentric problem but can also bring a simple calculation through the numerical methods. Dynamic coefficients of the rotor-seal system are also researched based on the new nonlinear model under the condition of the toothon-stator and tooth-on-rotor. In order to verify that the equation-control model is correct, Childs and Scharrer's experiment and two-control-volume model are employed and there is a comparison between theoretical results and experimental results. The result shows that theoretical results from the improved model are in better agreement with Childs and Scharrer's experiment than two-control-volume model. The proposed model in this paper provides a theoretic reference for further research on the rotor-seal system.

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Section: Introductionmentioning

confidence: 99%

Research into the dynamic coefficient of the rotor-seal system for teeth-on-stator and teeth-on-rotor based on an improved nonlinear seal force model

Jing

2013

Journal of Vibration and Control

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“…Many theoretical studies, numerical calculations and measurements have been carried out to determine the effect of the self-excited vibration due to seals or bearings, for example, in papers by Qin et al [1], Jing et al [2], Jiao et al [3], Xia et al [4], Akhmetkhanov et al [5], Hua et al [6], Ding et al [7] and Li et al [8]. However, in the published papers, only a single factor, bearing or seal fluid force, is taken into account in studying the dynamics of a rotor system.…”

Section: Introductionmentioning

confidence: 99%

Numerical and experimental study of a rotor–bearing–seal system

Cheng¹,

Meng²,

Jing³

2007

Mechanism and Machine Theory

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“…Literature related to rotor-bearing and rotor-seal phenomena is abundant. Many theoretical studies, numerical calculations and measurements have been carried out to determine the effect of the self-excited vibration due to seals or bearings, for example, in papers by Qin and Shen [1], Jing and Meng [2], Jiao and Chen [3], Xia and Zhang [4], Akhmetkhanov and Banakh [5], Hua and Swaddiwudhipong [6], Ding and Cooper [7] and Li and Xu [8]. However, in the published papers, only a single factor, bearing or seal fluid force, is taken into account in studying the dynamics of a rotor system.…”

Section: Introductionmentioning

confidence: 99%

Non-Linear Dynamics of a Rotor-Bearing-Seal System

2006

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The non-linear dynamic behaviors of a rotor-bearing-seal coupled system are investigated by using Muszynska's non-linear seal fluid dynamic force model and non-linear oil film force, and the result from the numerical analysis is in agreement with the one from the experiment. The bifurcation of the coupled system is analyzed under different operating conditions. It is indicated that the dynamic behavior of the rotor-bearingseal system depends on the rotation speed, seal clearance and seal pressure of the rotor-bearing-seal system. The system state trajectory, Poincaré maps, frequency spectra and bifurcation diagrams are constructed to analyze the dynamic behavior of the rotor center. Various non-linear phenomena in the coupled system, such as periodic motion and quasi-periodic motion are investigated. The results show that the system has the potential for chaotic motion. The study may contribute to a further understanding of the non-linear dynamics of such a rotor-bearing-seal coupled system.

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Flow-Coupled Vibrations of Rotor and Seal

Cited by 10 publications

References 1 publication

Research into the dynamic coefficient of the rotor-seal system for teeth-on-stator and teeth-on-rotor based on an improved nonlinear seal force model

Research into the dynamic coefficient of the rotor-seal system for teeth-on-stator and teeth-on-rotor based on an improved nonlinear seal force model

Numerical and experimental study of a rotor–bearing–seal system

Non-Linear Dynamics of a Rotor-Bearing-Seal System

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