Full discontinuous Galerkin formulation of shell in large deformations with fracture mechanic applications

Becker, Gauthier; Noels, Ludovic

Reference : Full discontinuous Galerkin formulation of shell in large deformations with fracture ...


	Document type :	Scientific congresses and symposiums : Paper published in a book
	Discipline(s) :	Engineering, computing & technology : Mechanical engineering Engineering, computing & technology : Materials science & engineering Engineering, computing & technology : Aerospace & aeronautics engineering
	To cite this reference:	http://hdl.handle.net/2268/99051

Title :	Full discontinuous Galerkin formulation of shell in large deformations with fracture mechanic applications
Language :	English
Author, co-author :	Becker, Gauthier [Université de Liège - ULiège > Département d'aérospatiale et mécanique > Computational & Multiscale Mechanics of Materials (CM3) >]
	Noels, Ludovic [Université de Liège - ULiège > Département d'aérospatiale et mécanique > Computational & Multiscale Mechanics of Materials (CM3) >]
Publication date :	Nov-2011
Main document title :	Proceedings of the 5th International Conference on Advanded COmputational Methods in Engineering (ACOMEN2011)
Editor :	Hogge, Michel
	Van Keer, Roger
	Dick, Erik
	Malengier, Benny
	Slodicka, Marian
	Béchet, Eric
	Geuzaine, Christophe
	Noels, Ludovic
	Remacle, Jean-François
Pages :	10 pages
Peer reviewed :	No
On invitation :	No
Audience :	International
ISBN :	978-2-9601143-1-7
Event name :	5th International Conference on Advanded COmputational Methods in Engineering (ACOMEN2011)
Event date :	14-17 november 2011
Event organizer :	Université de Liège, Universiteit Gent, Université Catholique de Louvain
Event place (city) :	Liège
Event country :	Belgium
Keywords :	[en] shells ; fracture ; plasticity
Abstract :	[en] Different methods have been developed to model tearing prediction, as e.g., the combination between the cohesive principle and the finite element method. Unfortunately, this method has some well known issues that can be fixed by recourse to discontinuous Galerkin formulation. Such a formulation allows to insert very easily an extrinsic cohesive element at onset of fracture without any mesh modification. This promising technique has been recently developed by the authors for linear shell. Although promising numerical results were obtained, it is difficult to compare the method with experiments due to the large plastic deformation present in material before the fracture apparition. Thus, the method is extent herein to elasto-plastic finite deformations. The simulations of some benchmarks prove the ability of this new framework to model accurately the continuum part of the deformation and the crack propagation.
Funders :	Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS
Target :	Researchers ; Professionals
Permalink :	http://hdl.handle.net/2268/99051
Other URL :	http://www.ltas.ulg.ac.be/acomen2011/NewWebSite/docs/Abstracts/Numerical_Methods/Numerical%20Methods01.pdf

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Open access	2011_ACOMEN_ShellFrac.pdf		Author postprint	1.23 MB	View/Open

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