Nonlinear dynamic behaviors of a bolted joint rotor system supported by ball bearings
Sign Up to like & getrecommendations! Published in 2019 at "Archive of Applied Mechanics"
DOI: 10.1007/s00419-019-01585-2
Abstract: A dynamic model of the rotor-bearing system with bolted joint structure is set up based on the Lagrange’s equations, which considers the bearing clearance, the gyroscopic effect and the initial deformation due to the non-uniform… read more here.
Keywords: rotor; system; bearing clearance; rotor system ... See more keywords
Nonlinear dynamic response and transmissibility of a flexible rotor system mounted on viscoelastic elements
Sign Up to like & getrecommendations! Published in 2019 at "Nonlinear Dynamics"
DOI: 10.1007/s11071-019-05078-3
Abstract: In this paper, the three-dimensional nonlinear dynamics and force transmissibility characteristics of a flexible shaft-disk rotor system are investigated numerically. The rotor system is comprised of a flexible shaft supporting a rigid disk, and the… read more here.
Keywords: system; response; mounted viscoelastic; disk ... See more keywords
Multi-fault coupling study of a rotor system in experimental and numerical analyses
Sign Up to like & getrecommendations! Published in 2019 at "Nonlinear Dynamics"
DOI: 10.1007/s11071-019-05151-x
Abstract: Multi-fault rotor system is a hot spot in the study of rotor dynamics and fault diagnosis. The present study is aimed to deal with the vibration response and nonlinear behavior of a cracked rotor system… read more here.
Keywords: rotor; system; study; rotor system ... See more keywords
Experimental Identification of Internal and External Damping in a Rotor System with a Fatigue-Crack Using Full Spectrum
Sign Up to like & getrecommendations! Published in 2020 at "Experimental Techniques"
DOI: 10.1007/s40799-020-00368-7
Abstract: Demand of higher speeds in rotor systems has elevated the possibility of numerous instabilities. Internal damping is one of the key parameters for instability in such machinery. Its studies are generally conducted for a possible… read more here.
Keywords: damping; full spectrum; rotor system; crack ... See more keywords
Research on a new diagnosis index for fixed-point rub-impact of rotor system
Sign Up to like & getrecommendations! Published in 2021 at "Engineering Failure Analysis"
DOI: 10.1016/j.engfailanal.2021.105394
Abstract: Abstract A model for a rotor system simulated with finite element method and a test bench are established in this paper. The fixed-point rub-impact fault on rotor system is studied (There are six clearances to… read more here.
Keywords: rub impact; system; fixed point; rotor system ... See more keywords
Nonlinear response analysis for a dual-rotor system supported by ball bearing
Sign Up to like & getrecommendations! Published in 2021 at "International Journal of Non-linear Mechanics"
DOI: 10.1016/j.ijnonlinmec.2020.103627
Abstract: Abstract Rolling element bearings are used as main supports and are key sources of vibrations for aero-engine rotor systems. Mainly including the inner and outer rings, cages, and balls or rollers, the complicated mechanical structures… read more here.
Keywords: dual rotor; rotor system; system; ball bearing ... See more keywords
Nonlinear dynamic analysis using the complex nonlinear modes for a rotor system with an additional constraint due to rub-impact
Sign Up to like & getrecommendations! Published in 2019 at "Mechanical Systems and Signal Processing"
DOI: 10.1016/j.ymssp.2018.06.061
Abstract: Abstract A rub-impact can bring the impact load and friction force onto the rotor, and in the meantime, it can also produce the additional effect of changing the stiffness of the rotor system. Past analysis… read more here.
Keywords: rotor; rub impact; mode motion; impact ... See more keywords
Investigation on dynamic behaviors of rotor system with looseness and nonlinear supporting
Sign Up to like & getrecommendations! Published in 2022 at "Mechanical Systems and Signal Processing"
DOI: 10.1016/j.ymssp.2021.108400
Abstract: Abstract Pedestal looseness and supporting stiffness nonlinearities usually occur in rotating machines. To enhance the robustness and accurately forecast the nonlinear behaviors of rotor systems, these two kinds of common nonlinearities should be considered so… read more here.
Keywords: rotor system; supporting stiffness; rotor; nonlinear supporting ... See more keywords
Transient nonlinear dynamics of the rotor system supported by low viscosity lubricated bearing.
Sign Up to like & getrecommendations! Published in 2022 at "Chaos"
DOI: 10.1063/5.0125258
Abstract: This paper clarifies the mechanism of the dynamic characteristics of the water-lubricated bearing-rotor coupling system at different operating stages. Dynamic models of the water-lubricated bearing-rotor system under fluid lubrication are developed. The influences of different… read more here.
Keywords: bearing rotor; rotor; rotor system; transient nonlinear ... See more keywords
Stability and bifurcations of complex vibrations in a nonlinear brush-seal rotor system.
Sign Up to like & getrecommendations! Published in 2023 at "Chaos"
DOI: 10.1063/5.0134907
Abstract: A brush seal has the advantages of adapting to different vibration conditions and increasing the stability of the nonlinear rotor system. In this research, the stability and bifurcations of complex vibrations in a brush-seal rotor… read more here.
Keywords: brush seal; rotor system; stability bifurcations;
Damping characteristics of integral squeeze film dampers on vibration of deep groove ball bearing with localized defects
Sign Up to like & getrecommendations! Published in 2020 at "Industrial Lubrication and Tribology"
DOI: 10.1108/ilt-04-2020-0144
Abstract: Purpose This work aims to demonstrate the vibration suppression of the rotor system with localized defects on bearing using an integral squeeze film damper (ISFD). Design/methodology/approach Experiments were carried out to study the vibration characteristics… read more here.
Keywords: localized defects; rotor system; system; vibration ... See more keywords