On the stability analysis of hyperelastic boundary value problems using three- and two-field mixed finite element formulations

authored by
Jörg Schröder, Nils Viebahn, Peter Wriggers, Ferdinando Auricchio, Karl Steeger
Abstract

In this work we investigate different mixed finite element formulations for the detection of critical loads for the possible occurrence of bifurcation and limit points. In detail, three- and two-field formulations for incompressible and quasi-incompressible materials are analyzed. In order to apply various penalty functions for the volume dilatation in displacement/pressure mixed elements we propose a new consistent scheme capturing the non linearities of the penalty constraints. It is shown that for all mixed formulations, which can be reduced to a generalized displacement scheme, a straight forward stability analysis is possible. However, problems based on the classical saddle-point structure require a different analyses based on the change of the signature of the underlying matrix system. The basis of these investigations is the work from Auricchio et al. (Comput Methods Appl Mech Eng 194:1075–1092, 2005, Comput Mech 52:1153–1167, 2013).

Organisation(s)
Institute of Continuum Mechanics
External Organisation(s)
University of Duisburg-Essen
University of Pavia
Type
Article
Journal
Computational mechanics
Volume
60
Pages
479-492
No. of pages
14
ISSN
0178-7675
Publication date
05.05.2017
Publication status
Published
Peer reviewed
Yes
ASJC Scopus subject areas
Computational Mechanics, Ocean Engineering, Mechanical Engineering, Computational Theory and Mathematics, Computational Mathematics, Applied Mathematics
Electronic version(s)
https://doi.org/10.1007/s00466-017-1415-2 (Access: Closed)
 

Details in the research portal "Research@Leibniz University"