Professor William Coombs w.m.coombs@durham.ac.uk
Professor
Professor William Coombs w.m.coombs@durham.ac.uk
Professor
R.S. Crouch
F. B. J. Barends
Editor
J. Breedeveld
Editor
R. B. J. Brinkgreve
Editor
M. Korff
Editor
L. A. van Paassen
Editor
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.
Coombs, W., & Crouch, R. (2011, September). Reuleaux plasticity: improving Mohr-Coulomb and Drucker-Prager. Presented at Geotechnical Engineering: New Horizons. Proceedings of the 21st European Young Geotechnical Engineers' Conference, Rotterdam, the Netherlands
Presentation Conference Type | Conference Paper (published) |
---|---|
Conference Name | Geotechnical Engineering: New Horizons. Proceedings of the 21st European Young Geotechnical Engineers' Conference |
Publication Date | Sep 1, 2011 |
Deposit Date | Sep 13, 2011 |
Publicly Available Date | Nov 27, 2015 |
Publisher | IOS Press |
Peer Reviewed | Peer Reviewed |
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 |
Accepted Conference Paper
(380 Kb)
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