Title
On the orthogonal subgrid scale pressure stabilization of finite deformation J2 plasticity
Date Issued
01 February 2006
Access level
open access
Resource Type
journal article
Author(s)
Abstract
The use of stabilization methods is becoming an increasingly well-accepted technique due to their success in dealing with numerous numerical pathologies that arise in a variety of applications in computational mechanics. In this paper a multiscale finite element method technique to deal with pressure stabilization of nearly incompressibility problems in nonlinear solid mechanics at finite deformations is presented. A J2-flow theory plasticity model at finite deformations is considered. A mixed formulation involving pressure and displacement fields is used as starting point. Within the finite element discretization setting, continuous linear interpolation for both fields is considered. To overcome the Babuška-Brezzi stability condition, a multiscale stabilization method based on the orthogonal subgrid scale (OSGS) technique is introduced. A suitable nonlinear expression of the stabilization parameter is proposed. The main advantage of the method is the possibility of using linear triangular or tetrahedral finite elements, which are easy to generate and, therefore, very convenient for practical industrial applications. Numerical results obtained using the OSGS stabilization technique are compared with results provided by the P1 standard Galerkin displacements linear triangular/tetrahedral element, P1/P1 standard mixed linear displacements/linear pressure triangular/tetrahedral element and Q1/P0 mixed bilinear/trilinear displacements/constant pressure quadrilateral/hexahedral element for 2D/3D nearly incompressible problems in the context of a nonlinear finite deformation J2 plasticity model. © 2005 Elsevier B.V. All rights reserved.
Start page
1224
End page
1251
Volume
195
Issue
December 9
Language
English
OCDE Knowledge area
Ingeniería mecánica
Subjects
Scopus EID
2-s2.0-28544436931
Source
Computer Methods in Applied Mechanics and Engineering
ISSN of the container
00457825
Source funding
European Commission
Sponsor(s)
The authors are thankful for the financial support given by European Commission through the Growth project GRD1-2000-25243. Useful discussions with Prof. R. Codina and Prof. E. Oñate are gratefully acknowledged.
Sources of information:
Directorio de Producción Científica
Scopus