ORBi: KARASEVA Olga - A comparison of triangle and quadrangle finite elements for large strain elastoplastic formulations

Reference : A comparison of triangle and quadrangle finite elements for large strain elastoplastic f...


	Document type :	Scientific congresses and symposiums : Paper published in a book
	Discipline(s) :	Engineering, computing & technology : Mechanical engineering
	To cite this reference:	http://hdl.handle.net/2268/2903

Title :	A comparison of triangle and quadrangle finite elements for large strain elastoplastic formulations
Language :	English
Author, co-author :	KARASEVA, Olga [ > > ]
	Stainier, Laurent [Université de Liège - ULg > Département d'aérospatiale et mécanique > LTAS - Milieux continus et thermomécanique >]
	Careglio, C. [LAPIC, Instituto Tecnologico Universitario, Universidad Nacional de Cuyo, Argentina > > > >]
	Garcia-Garino, C. [LAPIC, Instituto Tecnologico Universitario, Universidad Nacional de Cuyo, Argentinal > > > >]
	Mirasso, A. [LAPIC, Instituto Tecnologico Universitario, Universidad Nacional de Cuyo, Argentina > > > >]
	Ponthot, Jean-Philippe [Université de Liège - ULg > Département d'aérospatiale et mécanique > LTAS-Mécanique numérique non linéaire >]
Publication date :	2008
Main document title :	Proceedings of ACOMEN’2008, Advanced Computational Methods in Engineering
Publisher :	M. Hogge, R. Van Keer, L. Noels, L. Stainier, J.-P. Ponthot, Editors: J.-F. Remacle, E. Dick
Pages :	11
Audience :	International
Event name :	Fourth International Conference on Advanced COmputational Methods in ENgineering (ACOMEN 2008)
Event date :	26-28 May 2008
Event place (city) :	Liège
Event country :	Belgium
Keywords :	[en] comparison ; triangle and quadrangle ; finite elements ; large strain ; elastoplastic formulations
Abstract :	[en] The paper presents a comparative study of different elastoplastic large strain formulations used in research groups in Mendoza and Li`ege. The comparison is focused on a few academic standardized problems, in particular necking of a cylindrical bar in tension. Stress distribution at necking section, as well as load histories are analyzed for all three formulations. Two other test cases consider bending of the so-called ”Greco” beam and upsetting of a cylinder. Numerical results show that all approaches yield very similar results and thus are equally valid. Furthermore, quadratic 6-noded triangles provide a good alternative to bilinear quadrangles, even if sometimes they appear to be more sensitive to big distorsions.
Target :	Researchers ; Professionals ; Students
Permalink :	http://hdl.handle.net/2268/2903

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