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Bifurcation analysis of a jeffcott rotor with a bearing clearance: Numerics and experiments
Conference ObjectAbstract: We introduce a two-degrees-of-freedom, non-smooth model of a Jeffcott rotor with a bearing clearancePalabras claves:Autores:Joseph Páez Chávez, Marian Wiercigroch, Vaziri V.Fuentes:googlescopusControl Method to Suppress Stick-slip in Drill-strings Featuring Actuation Delay and Constraints
Conference ObjectAbstract: In this work, performance of a modified-integral resonant controller with integral tracking is invesPalabras claves:Control of constrained systems, delay systems, Output feedback control, Parameter-varying systems, trackingAutores:Aphale S.S., MacLean J.D.J., Marian Wiercigroch, Vaziri V.Fuentes:scopusAdaptive Time-Delayed Feedback Control Applied to a Vibro-Impact System
Conference ObjectAbstract: Multi-stable systems can be found in many fields of engineering from vibro-impact energy harvestersPalabras claves:control, Impact oscillator, Multi-stability, nonlinear dynamicsAutores:Costa D., Marian Wiercigroch, Pavlovskaia E.E., Vaziri V.Fuentes:scopusEnergy saving by reducing motor rating of sucker-rod pump systems
ArticleAbstract: Energy industry can make significant savings by reducing electric motors ratings of the popular SuckPalabras claves:ENERGY SAVING, Motor control, Open and closed-loop frequency control, Sucker-rod pumping systemAutores:Aphale S.S., Dong S., Li W., Marian Wiercigroch, Vaziri V.Fuentes:scopusDynamics and frequency and voltage control of downhole oil pumping system
ArticleAbstract: The motor load torque of a typical pumping system employed in onshore oil-fields has a fluctuating ‘Palabras claves:Dynamics, Electro-mechanical model, ENERGY SAVING, Frequency and voltage control, Pumping systemAutores:Aphale S.S., Dong S., Li W., Marian Wiercigroch, Vaziri V.Fuentes:scopusDynamics, synchronization and control of parametric pendulums
Conference ObjectAbstract: In this work the dynamics and synchronization of the coupled parametric pendulums system is examinedPalabras claves:Delayed feedback control, Parametric pendulum, Synchronization of pendulumsAutores:Marian Wiercigroch, Najdecka A., Vaziri V.Fuentes:scopusNonlinear dynamics of lump mass model of drill-string in horizontal well
ArticleAbstract: We develop a dynamic model of a drill-string in a horizontal well having six Degrees-Of-Freedom, whiPalabras claves:Complex whirling, Coupled motions, Drill-string dynamics, Horizontal well, State-dependent delayAutores:Huang Z., Kapitaniak M., Ma Y., Marian Wiercigroch, Vaziri V., Xie D.Fuentes:scopusNumerical Study of Forward and Backward Whirling of Drill-String
ArticleAbstract: This work presents a numerical investigation of the undesired lateral vibrations (whirling) occurrinPalabras claves:Autores:Joseph Páez Chávez, Kapitaniak M., Marian Wiercigroch, Vaziri V.Fuentes:googlescopusHelical buckling of thin rods: FE modelling
Conference ObjectAbstract: In this paper, we utilize the Finite Element (FE) method to model twisting of long thin rods and capPalabras claves:Autores:Kapitaniak M., Marian Wiercigroch, Vaziri V.Fuentes:scopusModelling and experimental verification of an asymmetric Jeffcott rotor with radial clearance
Conference ObjectAbstract: This paper presents a new mathematical model of a Jeffcott rotor within a snubber ring with anisotroPalabras claves:Autores:Joseph Páez Chávez, Marian Wiercigroch, Vaziri V.Fuentes:googlescopus