Polar extension of a hypoplastic model for granular materials with shear localization

2002 ◽  
Vol 34 (9) ◽  
pp. 563-576 ◽  
Author(s):  
W. Huang ◽  
K. Nübel ◽  
E. Bauer
Keyword(s):  
Granular Materials ◽  
Shear Localization ◽  
Hypoplastic Model

DEM modelling of shear localization in a plane Couette shear test of granular materials

2014 ◽  
Vol 10 (3) ◽  
pp. 389-397 ◽  
Author(s):  
Wenxiong Huang ◽  
Liya Huang ◽  
Daichao Sheng ◽  
Scott W. Sloan
Keyword(s):  
Granular Materials ◽  
Shear Test ◽  
Shear Localization

scholarly journals Finite-element formulations of shear localization in granular materials

PAMM ◽  
2007 ◽  
Vol 7 (1) ◽  
pp. 4030003-4030004
Author(s):  
Trinh Bach Tuyet ◽  
Klaus Hackl
Keyword(s):  
Finite Element ◽  
Granular Materials ◽  
Shear Localization ◽  
Finite Element Formulations

Prediction of Pressure and Density Dependent Failure in Sand-Like Granular Materials under General Stress Conditions

2007 ◽  
Vol 340-341 ◽  
pp. 1243-1248
Author(s):  
Wen Xiong Huang ◽  
Erich Bauer ◽  
Scott William Sloan
Keyword(s):  
Granular Materials ◽  
Failure Modes ◽  
Initial Density ◽  
Confining Pressure ◽  
Stress Conditions ◽  
True Triaxial Test ◽  
True Triaxial ◽  
Density Dependent ◽  
Hypoplastic Model ◽  
Constitutive Parameters

This paper presents a theoretical study of failure modes in sand-like granular materials under general triaxial stress conditions based on a hypoplastic model and a bifurcation analysis. The well developed constitutive model contains the void ratio as a state variable which allows the pressure and density dependent behaviour of the granular materials to be described with a single set of state-independent constitutive parameters. Based on this model a shear bifurcation condition is derived. Loading along various stress paths that can be achieved with a true triaxial test apparatus are simulated numerically. Either localized failure or uniform diffuse failure in granular samples may occur, which is determined based on whether the shear bifurcation condition is met. Effects of confining pressure and initial density are discussed.

Dissipation in granular materials

1998 ◽  
Vol 77 (5) ◽  
pp. 1413-1425 ◽  
Author(s):  
Dietrich E.Wolf, Farhang Radjai, Sabine Dipp
Keyword(s):  
Granular Materials
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