TITLE

Analytical model for nonlinear vibration of flexible rotor system

AUTHOR(S)
Min Wu; Shengbo Yang; Dongjiang Han; Daren Yu; Jinfu Yang
PUB. DATE
December 2016
SOURCE
Journal of Vibroengineering;Dec2016, Vol. 18 Issue 8, p4980
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
An analytical model is proposed to analyze a series of typical nonlinear behaviors of flexible rotor system, such as resonance, oscillation, whirl and whip. The model is constructed by introducing a defined nonlinear scale factor ε, nonlinear stiffness and nonlinear damping. Based on multi-scale method, the analytical solutions of steady-state and transient-state are derived, and the nonlinear natural frequency and Frequency Response Equation (FRE) are obtained. A transient time scale factor t1 is defined to reflect the transient-state influence on steady-state solution. The experimental result also verifies the rationality and validity of the analytical model and the analytical solutions.
ACCESSION #
120525715

 

Related Articles

  • On the characteristics of an ultra-low frequency nonlinear isolator using sliding beam as negative stiffness. Huang, Xiuchang; Liu, Xintian; Hua, Hongxing // Journal of Mechanical Science & Technology;Mar2014, Vol. 28 Issue 3, p813 

    A novel structured ultra-low frequency nonlinear passive isolator is presented. The isolator is composed of a knife-edge supported sliding beam which offers negative stiffness and a vertical mechanical spring in parallel to get quasi-zero dynamic stiffness. The static characteristics of the...

  • Vibration Analysis and Diagnosis of Coupling Faults in Rotor System. Xuejun Li; Fuze Xu; Guangbin Wang; Yilin He // Journal of Convergence Information Technology;Apr2013, Vol. 8 Issue 8, p566 

    This thesis establishes a dynamical model of the imbalance-misalignment coupling faults and the finite element model of the rotor system which is under the supporting of the rolling bearing. It researches the features and the regular pattern of the coupling faults, the influence of the imbalance...

  • Identification of flap motion parameters for vibration reduction in helicopter rotors with multiple active trailing edge flaps. Dalli, Uğur; Yüksel, Şefaatdin // Shock & Vibration;2011, Vol. 18 Issue 5, p727 

    An active control method utilizing the multiple trailing edge flap configuration for rotorcraft vibration suppression and blade loads control is presented. A comprehensive model for rotor blade with active trailing edge flaps is used to calculate the vibration characteristics, natural...

  • Fixed points of two-degree of freedom systems. Abu-Hilal, Mohammed // Shock & Vibration;1998, Vol. 5 Issue 3, p199 

    The presence of fixed points in a frequency response of vibrating systems can greatly complicate the vibration reduction if these points are not recognized. In this paper, the fixed points of two-degree of freedom systems are studied. The frequencies at which fixed points occur and their...

  • Vibration pattern related to transverse cracks in rotors. Bachschmid, Nicolò; Tanzi, Ezio // Shock & Vibration;2002, Vol. 9 Issue 4/5, p217 

    A method for calculating the breathing behavior of transverse cracks of different types in rotating shafts is described. Thermal effects are included. Some results in terms of vibration excitation related to different shapes of cracks are presented.

  • Initial Stiffness of Reinforced Concrete Columns with Moderate Aspect Ratios. Tran, Cao Thanh Ngoc; Li, Bing // Advances in Structural Engineering;Feb2012, Vol. 15 Issue 2, p265 

    The estimation of the initial stiffness of columns subjected to seismic loadings has long been a matter of considerable uncertainty. This paper reports a study that is devoted to addressing this uncertainty by developing a rational method to determine the initial stiffness of RC columns when...

  • Evaluation of Displacement-Based, Force-Based and Plastic Hinge Elements for Structural Non-linear Static Analysis. Li, Shuang; Zhai, Chang-Hai; Xie, Li-Li // Advances in Structural Engineering;Mar2012, Vol. 15 Issue 3, p477 

    This paper evaluates accuracies and applicabilities of frame elements constructed by displacement-based (DB), force-based (FB) and plastic hinge (PH) methods for structural non-linear static analysis. The theoretical bases of the three frame elements are compared and the global response (nodal...

  • Effect of Tip Mass on Modal Flexural Sensitivity of Rectangular AFM Cantilevers to Surface Stiffness Variations. Farrokh Payam, Amir; Fathipour, Morteza // Arabian Journal for Science & Engineering (Springer Science & Bu;Feb2014, Vol. 39 Issue 2, p1393 

    In this paper, the effect of the tip mass on the sensitivity of flexural vibration modes of an AFM rectangular cantilever has been studied and a characteristics equation for the AFM cantilever has been derived. Then, based on the characteristics equation, a closed form expression for the...

  • APPLICATIONS UTILIZING THE DAMPING OF COMPOSITE MICROSTRUCTURES FOR MECHANISMS OF PRODUCTION MACHINES AND MANIPULATOR DEVICES. Murcinkova, Zuzana; Krenicky, Tibor // Proceedings of the International Multidisciplinary Scientific Ge;2013, p23 

    Paper dealt with applications utilizing the damping of composite microstructures for mechanisms of production machines and manipulator devices. The present research of composite materials is focused also in fields of applications as well as development of advanced components of production...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics