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.
Disciplines :
Mechanical engineering
Author, co-author :
Karaseva, Olga
Stainier, Laurent ; Université de Liège - ULiège > 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 - ULiège > Département d'aérospatiale et mécanique > LTAS-Mécanique numérique non linéaire
Language :
English
Title :
A comparison of triangle and quadrangle finite elements for large strain elastoplastic formulations
Publication date :
2008
Event name :
Fourth International Conference on Advanced COmputational Methods in ENgineering (ACOMEN 2008)
Event place :
Liège, Belgium
Event date :
26-28 May 2008
Audience :
International
Main work 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
