HomeHome

A unified method to predict diffuse and localized instabilities in sands

WaiChing Sun

Title:
A unified method to predict diffuse and localized instabilities in sands
Author(s):
Sun, WaiChing
Date:
Type:
Articles
Department(s):
Civil Engineering and Engineering Mechanics
Volume:
8
Persistent URL:
Book/Journal Title:
Geomechanics and Geoengineering: An International Journal
Abstract:
A simplified method to analyse diffuse and localized bifurcations of sand under drained and undrained conditions is presented in this paper. This method utilizes results from bifurcation analysis and critical state plasticity theory to detect the onset of pure and dilatant shear band formation, static liquefaction and drained shear failures systematically. To capture the soil collapse observed in experiments, the instability state line concept originated by Chu, Lo and Lee in 1993 is adopted. Emphasis is given to examine how the presence of pore-fluid may facilitate or delay instability after yielding occurs. The predictions of instabilities are compared with experimental data from triaxial compression tests on Toyoura and Changi sands.
Subject(s):
Engineering
Civil engineering
Publisher DOI:
http://dx.doi.org/10.1080/17486025.2012.695403
Item views
409
Metadata:
text | xml
Suggested Citation:
WaiChing Sun, , A unified method to predict diffuse and localized instabilities in sands, Columbia University Academic Commons, .

Columbia University Libraries | Policies | FAQ