ORBi: Viguié Régis - Using passive nonlinear targeted energy transfer to stabilize drill-stringsystems

Reference : Using passive nonlinear targeted energy transfer to stabilize drill-stringsystems


	Document type :	Scientific journals : Article
	Discipline(s) :	Engineering, computing & technology : Multidisciplinary, general & others Engineering, computing & technology : Mechanical engineering
	To cite this reference:	http://hdl.handle.net/2268/18255

Title :	Using passive nonlinear targeted energy transfer to stabilize drill-stringsystems
Language :	English
Author, co-author :	Viguié, Régis [Université de Liège - ULg > Département d'aérospatiale et mécanique > LTAS - Vibrations et identification des structures >]
	Kerschen, Gaëtan [Université de Liège - ULg > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux >]
	Golinval, Jean-Claude [Université de Liège - ULg > Département d'aérospatiale et mécanique > LTAS - Vibrations et identification des structures >]
	McFarland, D. M. [UniversityofIllinoisatUrbana-Champaign,USA > Department ofMechanicalScienceandEngineering > > >]
	Bergman, L. A. [UniversityofIllinoisatUrbana-Champaign,USA > Department ofMechanicalScienceandEngineering > > >]
	et al [> >]
Publication date :	2009
Journal title :	Mechanical Systems & Signal Processing
Publisher :	Academic Press
Volume :	23
Pages :	149-169
Audience :	International
ISSN :	0888-3270
City :	London
Country :	United Kingdom
Keywords :	[en] Drill-string system ; Torsional vibrations ; Passive energy transfer
	[fr] Essentialnonlinearity ; Nonlinearenergysink
Abstract :	[en] Torsional vibrations of drill strings used in drilling oil and gas wells arises from a complex interaction of the dynamics of the drilling structure with speed-dependent effective rock-cutting forces. These forces are often difficult to model, and contribute substantially to the instability problems of controlling the drilling operation so as to produce steady cutting. In this work we show how nonlinear passive targeted energy transfer to a lightweight attachment can be used to passively control these instabilities. This is performed by means of a nonlinear energy sink (NES), a lightweight attachment which has been shown to be effective in reducing or even completely eliminating self-excited motions in aeroelastic and other systems. The NES is a completely passive, inherently broadband vibration absorber capable of attracting and dissipating vibrational energy from the primary structure to which it is attached, in this case a nonlinear discontinuous model of a drill-string system. In this paper we describe a prototypical drill string-NES system, briefly discuss some of the analytical and computational tools suitable for its analysis, and then concentrate on mathematical results on the efficacy of the NES in this application and their physical interpretation.
Target :	Researchers ; Professionals ; Students
Permalink :	http://hdl.handle.net/2268/18255
DOI :	10.1016/j.ymssp.2007.07.001

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