Experimental verification of Jeffcott rotor model with preloaded snubber ring

Karpenko, E. V.; Wiercigroch, Marian; Pavlovskaia, Ekaterina; Neilson, Richard David

doi:10.1016/j.jsv.2006.05.044

Cited by 52 publications

(28 citation statements)

References 17 publications

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“…10b2 gives similarities for the global vibration properties. The appearance of a chaotic motion in region 3 can be due to unbalance forces as it is shown in Fig. 4c.…”

Section: Resultsmentioning

confidence: 85%

“…The maximum displacement is greater at the beginning of the region and tends to decrease afterwards. The region 3 starts with a periodic motion, but suddenly jumps to an unexpected region of chaotic motion in the range [0.55-0.58] as seen in Fig. 8a until a periodic region takes over for Ω = 0.72 in Fig.…”

Section: Resultsmentioning

confidence: 90%

“…4a performed for the model developed by [16] with rigid blades impacting a massless ring shows that the system behaves similarly for a damping value ζ ≤ 0.15. However, a low damping can increase region 2 and shorten region 3 . It can also reveal small chaotic areas in region 1 .…”

Section: Simulation Methods and General Resultsmentioning

confidence: 99%

“…When the unbalance force is increased, the trigger property at 2/3 of the normalized frequency starts to disappear. A new chaotic region is created in region 3 , until an entire chaotic region is formed and composed of the three regions 2 , 3 and 4 . However, the trigger property at 1/3 is always present independently of the unbalance force.…”

Section: Simulation Methods and General Resultsmentioning

confidence: 99%

“…The experimental validation of numerical simulations has usually been observed on simple mathematical models. Karpenko et al [1][2][3] found a positive correlation between analytical, numerical and experimental bifurcation diagrams of a Jeffcott rotor with a preloaded snubber ring. Gonsalves et al [4] developed a model of discontinuous Jeffcott rotor subjected to mass-unbalance forces.…”

Section: Introductionmentioning

confidence: 97%

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Nonlinear vibrations of a misaligned bladed Jeffcott rotor

Thiery

Aidanpää

2016

Nonlinear Dyn

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This paper describes the numerical and experimental investigation of the nonlinear vibration of a bladed Jeffcott rotor. The nonlinearity in the system is due to discontinuities caused by multiple contacts with an outer ring as well as the nonlinear deformation of the massless blades. Contacts occur since the rotor shaft is initially misaligned by displacing the outer ring in one direction. The aim of the paper is to develop a simple model of bladed rotor and verify whether the global dynamics of the numerical simulations can be observed experimentally. The experimental rig and data acquisition are presented in detail together with the experimental procedures. The results between the numerical simulation and experiments are compared in terms of bifurcation diagrams and waterfall plots. An overall correlation is observed between the numerical and experimental study in the case of stiff blades, with differences mainly in localized frequency ranges due to parameter variation.

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“…10b2 gives similarities for the global vibration properties. The appearance of a chaotic motion in region 3 can be due to unbalance forces as it is shown in Fig. 4c.…”

Section: Resultsmentioning

confidence: 85%

Section: Resultsmentioning

confidence: 90%