Article (Scientific journals)
Eulerian Formulation of Elastic Rods
Huynen, Alexandre; Detournay, Emmanuel; Denoël, Vincent
2016In Proceedings of the Royal Society. Mathematical, Physical and Engineering Sciences, 472 (2190)
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Keywords :
Elastic rod; Eulerian formulation; Self-feeding
Abstract :
[en] In numerous biological, medical and engineering applications, elastic rods are constrained to deform inside or around tube-like surfaces. To solve efficiently this class of problems, the equations governing the deflection of elastic rods are reformulated within the Eulerian framework of this generic tubular constraint defined as a perfectly stiff canal surface. This reformulation hinges on describing the rod deformed configuration by means of its relative position with respect to a reference curve, defined as the axis or spine curve of the constraint, and on restating the rod local equilibrium in terms of the curvilinear coordinate parameterizing this curve. Associated with a segmentation strategy, which partitions the global problem into a sequence of rod segments either in continuous contact with the constraint or free of contact (except for their extremities), this approach not only trivializes the detection of new contacts but also suppresses the isoperimetric constraints resulting from the self-feeding feature of these elementary problems and the imposition of the rod position at the extremities of each rod segments.
Disciplines :
Mechanical engineering
Physics
Author, co-author :
Huynen, Alexandre ;  Université de Liège > Département ArGEnCo > Analyse sous actions aléatoires en génie civil
Detournay, Emmanuel;  University of Minnesota > Civil, Environmental and Geo- Engineering
Denoël, Vincent  ;  Université de Liège > Département ArGEnCo > Analyse sous actions aléatoires en génie civil
Language :
English
Title :
Eulerian Formulation of Elastic Rods
Publication date :
29 June 2016
Journal title :
Proceedings of the Royal Society. Mathematical, Physical and Engineering Sciences
ISSN :
1364-5021
eISSN :
1471-2946
Publisher :
Royal Society of London, London, United Kingdom
Volume :
472
Issue :
2190
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
FRIA - Fonds pour la Formation à la Recherche dans l'Industrie et dans l'Agriculture [BE]
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