Evolution of particle breakage and volumetric deformation of binary granular soils under impact load

2017 ◽  
Vol 19 (4) ◽  
Author(s):  
Yang Xiao ◽  
Hanlong Liu ◽  
Qingsheng Chen ◽  
Leihang Long ◽  
Jia Xiang
Keyword(s):  
Impact Load ◽  
Particle Breakage ◽  
Granular Soils ◽  
Volumetric Deformation

Isotropic–kinematic hardening model for coarse granular soils capturing particle breakage and cyclic loading under triaxial stress space

2016 ◽  
Vol 53 (4) ◽  
pp. 646-658 ◽  
Author(s):  
Qingsheng Chen ◽  
Buddhima Indraratna ◽  
John P. Carter ◽  
Sanjay Nimbalkar
Keyword(s):  
Cyclic Loading ◽  
Critical State ◽  
Kinematic Hardening ◽  
Plasticity Theory ◽  
Particle Breakage ◽  
Granular Soils ◽  
Stress Space ◽  
Bounding Surface ◽  
Bounding Surface Plasticity ◽  
Surface Plasticity

In this paper, a simple but comprehensive cyclic stress–strain model that incorporates particle breakage for granular soils including ballast and rockfill has been proposed on the basis of bounding surface plasticity theory within a critical state framework. Particle breakage and its effects are captured by a critical state line that is translated in voids ratio–stress space according to the dissipated energy (plastic work), through a hyperbolic function. A comprehensive equation related to particle breakage is proposed for the stress–dilatancy relationship to capture the complex dilatancy of granular soils. By extending Masing’s rule to bounding surface plasticity theory and introducing a generalized homological centre, a combined isotropic–kinematic hardening rule and a mapping rule have been established to simulate more realistically the response of gravelly soils under cyclic loading. The applicability and accuracy of this model are demonstrated by comparing its predictions with experimental results for different types of granular soils, including rockfill, under both monotonic and cyclic loading conditions. This study shows that the model can capture the characteristic features of coarse granular soils under complex loading paths.

Particle Breakage Characteristics of Granular Soils

1992 ◽  
Vol 32 (1) ◽  
pp. 26-40 ◽  
Author(s):  
Takeaki Fukumoto
Keyword(s):  
Particle Breakage ◽  
Granular Soils

scholarly journals Testing and Modeling on Particle Breakage for Granular Soils

2021 ◽  
Vol 21 (11) ◽  
pp. 02021001
Author(s):  
Yang Xiao ◽  
Chandrakant S. Desai ◽  
Hanlong Liu
Keyword(s):  
Particle Breakage ◽  
Granular Soils

scholarly journals An Enhanced Generalized Plasticity Model for Coarse Granular Material considering Particle Breakage

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
W. J. Cen ◽  
J. R. Luo ◽  
W. D. Zhang ◽  
M. S. Rahman
Keyword(s):  
Flow Direction ◽  
State Parameter ◽  
Particle Breakage ◽  
Triaxial Tests ◽  
Granular Soils ◽  
Plasticity Model ◽  
Generalized Plasticity ◽  
Confining Pressures ◽  
Coarse Granular Soil ◽  
Constitutive Parameters

In this study, an enhanced constitutive model is developed for coarse granular soil within the framework of generalized plasticity (Pastor, Zienkiewicz, and Chan, 1990). In this model, particle breakage is also considered by introducing the state parameter and the compression index into the plastic modulus, loading vectors, and plastic flow direction vectors of a generalized plasticity model. The calibration of constitutive parameters of the enhanced model is addressed in detail. The numerical simulation of triaxial tests for two types of coarse granular soils under different confining pressures is carried out to illustrate the particle breakage performance of the enhanced model. The good agreement between numerical results and experimental data indicates that the enhanced model can accurately characterize the influence of particle breakage on essential behavior of coarse granular soils.

scholarly journals A simple particle-size distribution model for granular materials

2018 ◽  
Vol 55 (2) ◽  
pp. 246-257 ◽  
Author(s):  
Chen-Xi Tong ◽  
Glen J. Burton ◽  
Sheng Zhang ◽  
Daichao Sheng
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Particle Diameter ◽  
Soil Classification ◽  
Particle Breakage ◽  
Distribution Model ◽  
Granular Soils ◽  
Proposed Model ◽  
Characteristic Particle

Particle-size distribution (PSD) is a fundamental soil property that plays an important role in soil classification and soil hydromechanical behaviour. A continuous mathematical model representing the PSD curve facilitates the quantification of particle breakage, which often takes place when granular soils are compressed or sheared. This paper proposes a simple and continuous PSD model for granular soils involving particle breakage. The model has two parameters and is able to represent different types of continuous PSD curves. It is found that one model parameter is closely related to the coefficient of nonuniformity (Cu) and the coefficient of curvature (Cc), while the other represents a characteristic particle diameter. A database of 53 granular soils with 154 varying PSD curves is analyzed to evaluate the performance of the proposed PSD model, as well as that of three other PSD models in the literature. The results show that the proposed model has improved overall performance and captures the typical trends in PSD evolution during particle breakage. In addition, the proposed model is also used for assessing the internal stability of 27 widely graded soils.

Sign in / Sign up

Export Citation Format

Share Document