Premium
The critical state behaviour of barodesy compared with the Matsuoka–Nakai failure criterion
Author(s) -
Fellin Wolfgang,
Ostermann Alexander
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.1111
Subject(s) - principal stress , constitutive equation , function (biology) , stress space , surface (topology) , exponential function , stress (linguistics) , geotechnical engineering , mathematics , structural engineering , engineering , mathematical analysis , geometry , finite element method , cauchy stress tensor , linguistics , philosophy , evolutionary biology , biology
SUMMARY Barodesy is a new approach to constitutive modelling of soil. It is based on Goldscheider's principles and maps stretching directions onto corresponding stress directions with the help of a simple exponential function. This mapping also determines a critical state surface in principal stress space. The article investigates this surface and relates it to the well‐known Matsuoka–Nakai failure criterion. It turns out that the difference between these two surfaces is negligible for practical applications. Copyright © 2011 John Wiley & Sons, Ltd.