Skip to main content

Research Repository

Advanced Search

Reuleaux plasticity: improving Mohr-Coulomb and Drucker-Prager

Coombs, W.M.; Crouch, R.S.

Reuleaux plasticity: improving Mohr-Coulomb and Drucker-Prager Thumbnail


Authors

R.S. Crouch



Contributors

F. B. J. Barends
Editor

J. Breedeveld
Editor

R. B. J. Brinkgreve
Editor

M. Korff
Editor

L. A. van Paassen
Editor

Abstract

The yielding of soil exhibits both a Lode angle dependency and a dependency on the intermediate principal stress. Ignoring these leads to a loss of realism in geotechnical analysis, yet neither of the widely used Mohr-Coulomb (M-C) or Drucker-Prager (D-P) models include both. This paper presents a simple pressure-dependent plasticity model based on a modified Reuleaux (mR) triangle which overcomes these limitations and yet (like the M-C and D-P formulations) allows for an analytical backward-Euler stress integration solution scheme. This latter feature is not found in more sophisticated (and computationally expensive) models. The mR deviatoric function is shown to provide a significantly improved fit to experimental data when compared with the M-C and D-P functions. Finite deformation finite-element analysis of the expansion of a cylindrical cavity is presented, verifying the use of the mR constitutive model for practical analyses.

Citation

Coombs, W., & Crouch, R. (2011). Reuleaux plasticity: improving Mohr-Coulomb and Drucker-Prager. In F. B. J. Barends, J. Breedeveld, R. B. J. Brinkgreve, M. Korff, & L. A. van Paassen (Eds.), Geotechnical engineering : new horizons, 21st European Young Geotechnical Engineers' Conference, 2011, Rotterdam ; proceedings (241-247). https://doi.org/10.3233/978-1-60750-808-3-241

Conference Name Geotechnical Engineering: New Horizons. Proceedings of the 21st European Young Geotechnical Engineers' Conference
Conference Location Rotterdam, the Netherlands
Publication Date Sep 1, 2011
Deposit Date Sep 13, 2011
Publicly Available Date Nov 27, 2015
Publisher IOS Press
Pages 241-247
Book Title Geotechnical engineering : new horizons, 21st European Young Geotechnical Engineers' Conference, 2011, Rotterdam ; proceedings.
ISBN 9781607508076
DOI https://doi.org/10.3233/978-1-60750-808-3-241
Keywords Geomaterials, Computational plasticity, Analytical stress return, Mohr-Coulomb, Drucker-Prager
Public URL https://durham-repository.worktribe.com/output/1158468

Files




You might also like



Downloadable Citations