Nonlinear dynamical behaviors of a complicated dual-rotor aero-engine with rub-impact
Sign Up to like & getrecommendations! Published in 2018 at "Archive of Applied Mechanics"
DOI: 10.1007/s00419-018-1373-y
Abstract: In this paper, the nonlinear dynamical behaviors of a complicated dual-rotor aero-engine with rub-impact are investigated. A novel framework is proposed, in which the sophisticated geometrical structure is considered by finite solid element method and… read more here.
Keywords: dynamical behaviors; impact; complicated dual; rub impact ... See more keywords
Coupling rub-impact dynamics of double translational joints with subsidence for time-varying load in a planar mechanical system
Sign Up to like & getrecommendations! Published in 2019 at "Multibody System Dynamics"
DOI: 10.1007/s11044-019-09718-9
Abstract: In this paper, a novel dynamic model of coupling translation joints with subsidence for time-varying load in a planar mechanical system is established. One translational joint has four working scenarios, which are free motion, one… read more here.
Keywords: motion; system; impact; coupling translation ... See more keywords
Nonlinear dynamics of coupling rub-impact of double translational joints with subsidence considering the flexibility of piston rod
Sign Up to like & getrecommendations! Published in 2020 at "Nonlinear Dynamics"
DOI: 10.1007/s11071-020-05566-x
Abstract: In this work, based on the nine kinds of rub-impact scenarios of one single translational joint, we discuss 42 kinds of coupling rub-impact scenarios of double translational joints with subsidence for a triplex member including… read more here.
Keywords: coupling rub; rub impact; impact; piston rod ... See more keywords
Application of the improved NOFRFs weighted contribution rate based on KL divergence to rotor rub-impact
Sign Up to like & getrecommendations! Published in 2021 at "Nonlinear Dynamics"
DOI: 10.1007/s11071-021-06502-3
Abstract: As a common fault of the rotor system, the rub-impact between a rotor and a stator causes the rotor system to exhibit strong nonlinearities. Therefore, the vibration signals obtained from a rotor system with the… read more here.
Keywords: rotor; rub impact; weighted contribution; improved nofrfs ... 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 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
Rub-Impact Fault Diagnosis of Rotating Machinery Based on 1-D Convolutional Neural Networks
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Sensors Journal"
DOI: 10.1109/jsen.2019.2944157
Abstract: Rub-impact is a kind of serious malfunction, which often occurs in rotating machinery. The non-stationary rub-impact signals are always submerged in the background and noise signals, which makes it difficult to accurately diagnose the rubbing… read more here.
Keywords: rub impact; rotating machinery; impact fault; impact ... See more keywords
Dynamic Characteristics Analysis of a Seal-Rotor System With Rub-Impact Fault
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Computational and Nonlinear Dynamics"
DOI: 10.1115/1.4051185
Abstract: Labyrinth seals are widely used to prevent fluid leakage in high-low pressure areas of the rotating machinery. However, the rub-impact fault easily occurs in labyrinth seals. Considering the influence of gyroscopic effect, a finite element… read more here.
Keywords: system; impact fault; impact; rotor ... See more keywords
Erratum: Local vibration characteristics of rotating blades induced by moving rub impact loads
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Vibroengineering"
DOI: 10.21595/jve.2018.20365
Abstract: Considering spin softening and centrifugal stiffening effect of blades, the parameterized finite element model of rotating blades with moving rub-impact loads is established. Time domain response and frequency domain response are analyzed along with the… read more here.
Keywords: frequency; local vibration; rub impact; rotating blades ... See more keywords
Local Sensitivity Analysis of Steady-State Response of Rotors with Rub-Impact to Parameters of Rubbing Interfaces
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DOI: 10.3390/app11031307
Abstract: Local sensitivity analysis, which describes the relative importance of specific design parameters to the response of systems, is crucial for investigating dominant factors in optimal design. In this paper, local sensitivity analysis of the response… read more here.
Keywords: rub impact; response; response rotors; sensitivity analysis ... See more keywords
Effects of Bounded Uncertainties on the Dynamic Characteristics of an Overhung Rotor System with Rubbing Fault
Sign Up to like & getrecommendations! Published in 2019 at "Energies"
DOI: 10.3390/en12224365
Abstract: This paper investigated the nonlinear vibrations of an uncertain overhung rotor system with rub-impact fault. As the clearance of the rotor and stator is getting smaller, contact between them often occurs at high rotation speeds.… read more here.
Keywords: fault; rotor system; system; rotor ... See more keywords