Proportional stress and strain paths in barodesy. (6th August 2015)

• Record Type: Journal Article
• Authors: Medicus, Gertraud; Kolymbas, Dimitrios; Fellin, Wolfgang
• Is Part Of: International journal for numerical and analytical methods in geomechanics. Volume 40:Number 4(2016)
• Page Start: 509
• Page End: 522
• Publication Date: 2015-08-06
• Subjects: proportional paths -- asymptotic behaviour -- constitutive equation -- barodesy; Soil mechanics -- Mathematics -- Periodicals; Rock mechanics -- Mathematics -- Periodicals; 624.1510151
• DOI: 10.1002/nag.2413
• Languages: English
• ISSNs: 0363-9061

Abstract

Abstract: Asymptotic behaviour of soil deserves particular attention: If soil is deformed with a proportional strain path, the resulting stress path approaches asymptotically a proportional stress path. In this arcticle, we review existing experimental evidence on this phenomenon and discuss it in the frame of barodesy. Here, the presented relation is a modification of a barodetic expression and includes Jáky's relation, inhibits tensile stress and is able to predict asymptotic stress ratios based on experimental findings. The proposed relation is compared with experimental data as well as with the so‐called stress‐dilatancy relations and other constitutive relations proposed so far. Copyright © 2015 John Wiley & Sons, Ltd.