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Barodesy: a new hypoplastic approach
Author(s) -
Kolymbas D.
Publication year - 2011
Publication title -
international journal for numerical and analytical methods in geomechanics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.419
H-Index - 91
eISSN - 1096-9853
pISSN - 0363-9061
DOI - 10.1002/nag.1051
Subject(s) - constitutive equation , soil mechanics , stiffness , simplicity , constant (computer programming) , geotechnical engineering , deformation (meteorology) , granular material , stress (linguistics) , mathematics , calculus (dental) , engineering , geology , structural engineering , physics , computer science , finite element method , soil water , philosophy , medicine , linguistics , oceanography , dentistry , soil science , programming language , quantum mechanics
SUMMARY It is shown that the asymptotic mechanical behaviour (i.e. stresses asymptotically obtained with constant deformation rates) determines the entire mechanical behaviour of granular materials, such as soil. In this paper, a constitutive model, or rather a new theoretical framework, for sand is derived in terms of rational mechanics. The new theory, called ‘barodesy’, has an outstanding simplicity and comprises previously introduced concepts of Soil Mechanics: critical states and barotropy (i.e. power law dependence of stiffness on stress). Copyright © 2011 John Wiley & Sons, Ltd.