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New analysis model for rotor-bearing systems based on plate theory

Zhinan ZHANG, Mingdong ZHOU, Weimin DING, Huifang MA

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 4,   Pages 461-473 doi: 10.1007/s11465-019-0525-2

Abstract: The purpose of this work is to develop a new analysis model for angular-contact, ball-bearing systemsThe new analysis model is suitable for static and modal analyses of rotor-bearing systems.

Keywords： rotor-bearing system     rolling element bearing     plate theory     finite element analysis    

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Dynamics analysis of a cracked dual-disk over-hung rotor-bearing system

CHEN Hong, LI He, WEN Bang-chun, ZHANG Xiao-wei

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 2,   Pages 204-208 doi: 10.1007/s11465-006-0002-6

Abstract: A dynamic model of a dual-disk vertical over-hung rotor-bearing system is developed, taking into accountand amplitude spectra, we found that the crack greatly influences the dynamic characteristics of the rotor-bearingsystem.Because of the strong effect of the nonlinear oil-film force and crack to the system, 1/2 times, 1/3The results may bring up theoretical references for fault diagnosis of rotor-bearing systems.

Keywords： nonlinear oil-film     diagnosis     bifurcation     dynamic     numerical Runge-Kutta    

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Dynamic analysis of a rig shafting vibration based on finite element

Van Thanh NGO, Danmei XIE, Yangheng XIONG, Hengliang ZHANG, Yi YANG

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 3,   Pages 244-251 doi: 10.1007/s11465-013-0264-8

Abstract: Finally, responses of unbalance force are analyzed in case of undamped and damped system, and peaks of

Keywords： Finite element method (FEM)     lateral vibration     rig shafting     rotor-bearing system     dynamic characteristics    

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Vibratory behaviors of Jeffcott system on cylindrical roller bearings

Hao WU, Jianwen WANG, Qi AN

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 3,   Pages 305-309 doi: 10.1007/s11465-009-0036-7

Abstract: A Jeffcott rotor system of cylindrical roller bearings is studied in detail.Its critical speed is calculated by a new calculation method with roller bearing stiffness and dampingThe influences of bearing parameters, such as the roller length, rotor mass, distance between the bearingsRegular curves of the relationship between the geometric parameters and the system critical speed areThis means that an oil film will decrease the critical rotational speed of the rotor system.

Keywords： roller bearing     bearing-rotor system     design value     critical rotational speed    

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Analysis of stability and nonlinear response of rotor system with elliptical sliding bearing supports

LU Yanjun, LIU Heng, YU Lie, LI Qi, JIANG Ming, ZHANG Zhiyu

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 1,   Pages 37-45 doi: 10.1007/s11465-007-0006-x

Abstract: presented to calculate equilibrium position and critical speed corresponding to Hopf bifurcation point of bearing-rotorsystem, as by-product dynamic coefficients of bearing are obtained.The timescale, i.e., the unknown whirling period of Hopf bifurcation solution of bearing-rotor systemThe nonlinear unbalanced periodic responses of the system are obtained by using PNF method and path-followingThe numerical results revealed the rich and complex nonlinear behavior of the system, such as periodic

Keywords： computational     corrector mechanism     predictor corrector     multisolution     quasiperiodic    

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Influence of the Mechanical Seals on the Dynamic Performance of Rotor–Bearing Systems

XU Hua, ZHU Jun

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 1,   Pages 96-100 doi: 10.1007/s11465-005-0008-5

Abstract: bearing system.To check the response of the rotor bearing system under unbalance motivation, the Gauss method is usedbearing system of the high-speed machinery.The analysis results show that the mechanical seal more or less has effects on the rotor bearing systemThe mechanical seal has much more effects on the flexible rotor bearing system than on the rigid one.
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Stability and coupling dynamic behavior of nonlinear journal active electromagnetic bearing rotor system

LU Yanjun, HEI Di, WANG Yuan, DAI Rong, LU Yanjun, LIU Heng, YU Lie

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 2,   Pages 193-199 doi: 10.1007/s11465-008-0023-4

Abstract: The stability and coupling dynamic behavior of a journal active electromagnetic bearing rotor systemThe gyroscopic effect is considered in the rotor model.The system equations are formulated by combining equations for rotor motion and decentralized proportionalmethod is presented to calculate the critical speed at the corresponding Hopf bifurcation point of the systemWith the change of control parameters, the system local stability and bifurcation behaviors are obtained

Keywords： proportional integral     bifurcation     corresponding     integral differential     predictor-corrector mechanism    

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Stability and dynamics of rotor system with 45° slant crack on shaft

Yanli LIN, Xiaohui SI, Fulei CHU

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 2,   Pages 203-213 doi: 10.1007/s11465-011-0131-4

Abstract:

Crack on a shaft is one of the common damages in a rotor system.Results show that the vibration amplitude of the rotor system with a 45° slant crack on the shaftStability and dynamic characteristics of the rotor system with a 45° slant crack on the shaft underIt is shown that the instability of the transverse vibration of the rotor system increases with increasingThe results are helpful for the understanding the dynamic behavior of a rotor system with a slant crack

Keywords： rotor dynamics     slant crack     stability     torsional excitation     open and close    

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Balancing method without trial weights for rotor systems based on similitude scale model

Ruiduo YE, Liping WANG, Xiaojie HOU, Zhong LUO, Qingkai HAN

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 4,   Pages 571-580 doi: 10.1007/s11465-018-0478-x

Abstract: dynamic similitude scale model was proposed as a solution to the balancing problem of a large-scale rotorsystem.First, with the rotor system as the research object, the analytical expression of the influence coefficientwas derived on the basis of rotor dynamics theory.system.

Keywords： rotor system     dynamic similitude     balancing     without trial weights     influence coefficient    

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Experimental and theoretical investigations of the lateral vibrations of an unbalanced Jeffcott rotor

Ali ALSALEH, Hamid M. SEDIGHI, Hassen M. OUAKAD

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 4,   Pages 1024-1032 doi: 10.1007/s11709-020-0647-y

Abstract: experimentally explores and then theoretically examines the lateral vibrations of an unbalanced Jeffcott rotor-systemTo this end, three conditions of eccentric masses are considered by using a Bently Nevada RK-4 rotorthe basis of rigid rotor assumptions to theoretically predict the lateral vibrations.The dynamic features of the rotor system such as the linearized bearing induced stiffness are exclusivelyillustrates the applicability of employing simple models to predict the dynamic response of a real rotor-system

Keywords： rotor-dynamics     Jeffcott rotor     lateral vibrations     Lagrange method     system-equivalent stiffness     sleeve bearings    

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Performance investigation on ultrasonic levitation axial bearing for flywheel storage system

Taijiang PENG, Zhigang YANG, Junwu KAN, Fengjun TIAN, Xiaohong CHE,

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 4,   Pages 415-419 doi: 10.1007/s11465-009-0051-8

Abstract: The bearing is an important basic mechanical part for supporting a shaft.A flywheel storage system needs a type of noncontact support bearing to enhance the speed of the axisA magnetic suspension bearing is one type of noncontact bearing but has electromagnetic interferenceBased on the performance research of ultrasonic levitation technology, a novel noncontact bearing calledultrasonic bearing is presented, which consists of a special piezoelectric vibrator supporting the load

Keywords： ultrasonic bearing     flywheel storage system     piezoelectric ceramic     piezoelectric vibrator    

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A novel NN based rotor flux MRAS to overcome low speed problems for rotor resistance estimation in vector

Venkadesan ARUNACHALAM,Himavathi SRINIVASAN,A. MUTHURAMALINGAM

Frontiers in Energy 2016, Volume 10, Issue 4,   Pages 382-392 doi: 10.1007/s11708-016-0421-y

Abstract: This paper presents a new neural network based model reference adaptive system (MRAS) to solve low speedproblems for estimating rotor resistance in vector control of induction motor (IM).The MRAS using rotor flux as the state variable with a two layer online trained neural network rotorflux estimator as the adaptive model (FLUX-MRAS) for rotor resistance estimation is popularly used inThese lead to a significant error in the estimation of rotor resistance at low speed.
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Study on wave rotor refrigerators

Yuqiang DAI, Dapeng HU, Meixia DING

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 1,   Pages 83-87 doi: 10.1007/s11705-009-0075-y

Abstract: As a novel generation of a rotational gas wave machine, the wave rotor refrigerator (WRR) is an unsteady

Keywords： wave rotor     refrigeration     unsteady flow theory     wave diagram    

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Air bearing center cross gap of neutron stress spectrometer sample table support system

Yang LI,Yunxin WU,Hai GONG,Xiaolei FENG

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 4,   Pages 403-411 doi: 10.1007/s11465-016-0405-y

Abstract:

A support system is the main load-bearing component of sample table for neutron stress spectrometer, and air bearing is an important element of a support system.capacity of air bearing center cross gap were analyzed.A gap height difference results in the bearing capacity dropping rapidly.Further, findings of the study could guide the design of the support system and marble floor.

Keywords： neutron stress spectrometer     sample table     support system     air bearing     center cross gap     simulation     experiment    

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Optimization model for rotor blades of horizontal axis wind turbines

LIU Xiong, CHEN Yan, YE Zhiquan

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 4,   Pages 483-488 doi: 10.1007/s11465-007-0084-9

Abstract: This paper presents an optimization model for rotor blades of horizontal axis wind turbines.

Keywords： population     extended     algorithm     developed optimization     accurate    

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Title Author Date Type Operation

New analysis model for rotor-bearing systems based on plate theory

Zhinan ZHANG, Mingdong ZHOU, Weimin DING, Huifang MA

Journal Article

Dynamics analysis of a cracked dual-disk over-hung rotor-bearing system

CHEN Hong, LI He, WEN Bang-chun, ZHANG Xiao-wei

Journal Article

Dynamic analysis of a rig shafting vibration based on finite element

Van Thanh NGO, Danmei XIE, Yangheng XIONG, Hengliang ZHANG, Yi YANG

Journal Article

Vibratory behaviors of Jeffcott system on cylindrical roller bearings

Hao WU, Jianwen WANG, Qi AN

Journal Article

Analysis of stability and nonlinear response of rotor system with elliptical sliding bearing supports

LU Yanjun, LIU Heng, YU Lie, LI Qi, JIANG Ming, ZHANG Zhiyu

Journal Article

Influence of the Mechanical Seals on the Dynamic Performance of Rotor–Bearing Systems

XU Hua, ZHU Jun

Journal Article

Stability and coupling dynamic behavior of nonlinear journal active electromagnetic bearing rotor system

LU Yanjun, HEI Di, WANG Yuan, DAI Rong, LU Yanjun, LIU Heng, YU Lie

Journal Article

Stability and dynamics of rotor system with 45° slant crack on shaft

Yanli LIN, Xiaohui SI, Fulei CHU

Journal Article

Balancing method without trial weights for rotor systems based on similitude scale model

Ruiduo YE, Liping WANG, Xiaojie HOU, Zhong LUO, Qingkai HAN

Journal Article

Experimental and theoretical investigations of the lateral vibrations of an unbalanced Jeffcott rotor

Ali ALSALEH, Hamid M. SEDIGHI, Hassen M. OUAKAD

Journal Article

Performance investigation on ultrasonic levitation axial bearing for flywheel storage system

Taijiang PENG, Zhigang YANG, Junwu KAN, Fengjun TIAN, Xiaohong CHE,

Journal Article

A novel NN based rotor flux MRAS to overcome low speed problems for rotor resistance estimation in vector

Venkadesan ARUNACHALAM,Himavathi SRINIVASAN,A. MUTHURAMALINGAM

Journal Article

Study on wave rotor refrigerators

Yuqiang DAI, Dapeng HU, Meixia DING

Journal Article

Air bearing center cross gap of neutron stress spectrometer sample table support system

Yang LI,Yunxin WU,Hai GONG,Xiaolei FENG

Journal Article

Optimization model for rotor blades of horizontal axis wind turbines

LIU Xiong, CHEN Yan, YE Zhiquan

Journal Article