Coarse granular soil state-dependent constitutive model considered micromechanics alteration

2010 ◽  
pp. 139-144
Author(s):  
Yu-Feng Jia ◽  
Shi-Chun Chi
Keyword(s):  
Constitutive Model ◽  
Granular Soil ◽  
State Dependent ◽  
Coarse Granular Soil

A state-dependent constitutive model for methane hydrate-bearing sediments inside the stability region

Géotechnique ◽  
2020 ◽  
Vol 70 (12) ◽  
pp. 1094-1108 ◽  
Author(s):  
Charles Wang Wai Ng ◽  
Sina Baghbanrezvan ◽  
Tomas Kadlicek ◽  
Chao Zhou
Keyword(s):  
Constitutive Model ◽  
Methane Hydrate ◽  
Stability Region ◽  
State Dependent ◽  
The Stability ◽  
Hydrate Bearing Sediments

Viscoplastic constitutive approach for rate-sensitive structured clays

2009 ◽  
Vol 46 (6) ◽  
pp. 609-626 ◽  
Author(s):  
Sean D. Hinchberger ◽  
Guangfeng Qu
Keyword(s):  
Constitutive Model ◽  
Term Structure ◽  
Triaxial Compression ◽  
State Theory ◽  
Clay Particles ◽  
Hardening Law ◽  
State Dependent ◽  
Structured Clay ◽  
Soil Skeleton ◽  
Dependent Viscosity

This paper extends an existing elastic–viscoplastic (EVP) constitutive model using a state-dependent viscosity parameter to describe the engineering response of undisturbed structured clay. The term structure refers to the effects of fabric and weak cementation bonds between clay particles. The extended constitutive model is coupled with the Biot consolidation theory and is formulated to describe the intrinsic or unstructured response of clay using overstress viscoplasticity, an elliptical cap yield surface, Drucker–Prager failure envelope, and a hardening law from critical state theory. The clay structure is mathematically accounted for by assuming that the initial fluidity of structured clay at yield and failure is very low and that the fluidity increases with increasing plastic strain. This process is usually referred to as “destructuration.” The formulation is evaluated using Saint-Jean-Vianney (SJV) clay by comparing calculated and measured behaviour during consolidated isotropically undrained triaxial compression, triaxial creep, and constant rate-of-strain Ko′-consolidation tests. The comparisons indicate that the EVP constitutive model can describe most of the rate-sensitive behaviour of SJV clay during both drained and undrained laboratory tests involving either constant-volume shear or predominantly volumetric compression of the soil skeleton.

Modeling the Behavior of Geosynthetic Encased Columns: Influence of Granular Soil Constitutive Model

2012 ◽  
Vol 12 (4) ◽  
pp. 357-369 ◽  
Author(s):  
Victor N. Kaliakin ◽  
Majid Khabbazian ◽  
Christopher L. Meehan
Keyword(s):  
Constitutive Model ◽  
Granular Soil

A constitutive model for the state-dependent behaviors of rockfill material considering particle breakage

2014 ◽  
Vol 57 (8) ◽  
pp. 1636-1646 ◽  
Author(s):  
Yang Xiao ◽  
HanLong Liu ◽  
Gui Yang ◽  
YuMin Chen ◽  
JingShan Jiang
Keyword(s):  
Constitutive Model ◽  
The State ◽  
Particle Breakage ◽  
Rockfill Material ◽  
State Dependent
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