Volume 6, Issue 1 pp. 759-760
Section 18
Free Access

An Extended FE Formulation for Elasto-Plastic Materials

Uwe Rempler

Corresponding Author

Uwe Rempler

Institute of Applied Mechanics (CE), Pfaffenwaldring 7, 70569 Stuttgart/Germany, Internet: http://www.mechbau.uni-stuttgart.de/ls2

Uwe Rempler, Phone: +49 711 685-6-6346, Fax: +49 711 685-6-6347

Wolfgang Ehlers, Phone: +49 711 685-6-6346, Fax: +49 711 685-6-6347

Christian Wieners, Phone: +49 721 608 2063, Fax: +49 721 608 3197

Search for more papers by this author
Wolfgang Ehlers

Corresponding Author

Wolfgang Ehlers

Institute of Applied Mechanics (CE), Pfaffenwaldring 7, 70569 Stuttgart/Germany, Internet: http://www.mechbau.uni-stuttgart.de/ls2

Uwe Rempler, Phone: +49 711 685-6-6346, Fax: +49 711 685-6-6347

Wolfgang Ehlers, Phone: +49 711 685-6-6346, Fax: +49 711 685-6-6347

Christian Wieners, Phone: +49 721 608 2063, Fax: +49 721 608 3197

Search for more papers by this author
Christian Wieners

Corresponding Author

Christian Wieners

Department of Mathematics, Englerstraße 2, 76128 Karlsruhe/Germany, Internet: http://www.mathematik.uni-karlsruhe.de/~wieners

Uwe Rempler, Phone: +49 711 685-6-6346, Fax: +49 711 685-6-6347

Wolfgang Ehlers, Phone: +49 711 685-6-6346, Fax: +49 711 685-6-6347

Christian Wieners, Phone: +49 721 608 2063, Fax: +49 721 608 3197

Search for more papers by this author
First published: 23 January 2007
Citations: 1

Abstract

We present an alternative method for the numerical simulation of elasto-plastic material behaviour. For this extended Finite Element (FE) formulation the history variables, which provide the information of plastic deformations from the previous timesteps, are represented as FE functions. This results in additional degrees of freedom (DOF), and the radial return of the standard formulation is replaced by a fully coupled Newton method for the extended system. Numerical studies, using viscoplastic regularization within a geometrically linear approach prove comparative results and an advantage in calculation time for the extended FE formulation. (© 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.