An elastic-viscoplastic double-yield-surface model for coarse-grained soils considering particle breakage

2017 ◽  
Vol 85 ◽  
pp. 59-70 ◽  
Author(s):  
Yufei Kong ◽  
Ming Xu ◽  
Erxiang Song
Keyword(s):  
Yield Surface ◽  
Particle Breakage ◽  
Coarse Grained ◽  
Surface Model ◽  
Double Yield

scholarly journals A Modified Double Yield Surface Model of Frozen Soil Considering Particle Breakage

2019 ◽  
Vol 358 ◽  
pp. 022015
Author(s):  
Fei Luo ◽  
Fang Yan Guo ◽  
Siwen Cai ◽  
Yuxin Liu ◽  
Wei Wei ◽  
...  
Keyword(s):  
Yield Surface ◽  
Particle Breakage ◽  
Frozen Soil ◽  
Surface Model ◽  
Double Yield

Stress and Deformation Characteristics of Rock-Fill Dam with Asphalt Concrete Core Wall Founded on Deep Overburden

2013 ◽  
Vol 405-408 ◽  
pp. 428-433
Author(s):  
Fu Yong Chu ◽  
Jun Gao Zhu
Keyword(s):  
Yield Surface ◽  
Asphalt Concrete ◽  
Water Storage ◽  
Horizontal Displacement ◽  
Vertical Displacement ◽  
Surface Model ◽  
Concrete Core ◽  
Rock Fill ◽  
Stress And Deformation ◽  
Double Yield

Abstract: The stress and deformation of rock-fill dam with asphalt concrete core wall founded on deep overburden is calculated and analyzed by Duncan E-ν model and double-yield-surface model through three-dimensional finite element method. The stress and deformation of dams in water storage period is compared by the two models, the results show that the deformation distribution of dam core via two different models are coincide one another. The horizontal displacement and vertical displacement of rock-fill dam with asphalt concrete core wall by double-yield-surface model is smaller than which by Duncan E-ν model in the period of water storage. Furthermore, the horizontal displacement and vertical displacement by double-yield-surface model, which are close to the practical test data through the deformation via two models are in good agreement. The analysis of core-wall stress via double-yield-surface model is more reasonable than the Duncan E-ν model. The analysis result of resisting hydraulic fracturing of core dams by DuncanE-ν model is coincide which of core dams by double-yield-surface model.

An Elastoplastic Model for Coarse Grained Soils Obeying Lade's Dilatancy Rule

2013 ◽  
Vol 850-851 ◽  
pp. 381-386
Author(s):  
Jin Wang ◽  
Jiao Na Li ◽  
Sheng Zhu
Keyword(s):  
Potential Function ◽  
Yield Surface ◽  
Large Scale ◽  
Coarse Grained ◽  
Triaxial Tests ◽  
Surface Model ◽  
Test Results ◽  
Elastoplastic Model ◽  
Plastic Potential ◽  
Plastic Potential Function

This paper discussed the mechanism of dilatancy in coarse grained soils. Large-scale triaxial tests were also conducted to study the dilatancy law of coarse grained soils. Based on the results of the previous studies, it is found that plastic potential function proposed by Lade can fit the test results well. Lades dilatancy rule was then applied to a practical two-yield-surface model. Elastoplastic formula of the two-yield-surface model was also deduced in detail. The new model was verified with several groups of different materials. Results showed that this model could predict the behaviors of coarse grained soils well.

scholarly journals A simple critical-state-based double-yield-surface model for clay behavior under complex loading

2013 ◽  
Vol 8 (5) ◽  
pp. 509-523 ◽  
Author(s):  
Zhen-Yu Yin ◽  
Qiang Xu ◽  
Pierre-Yves Hicher
Keyword(s):  
Yield Surface ◽  
Critical State ◽  
Complex Loading ◽  
Surface Model ◽  
Double Yield

scholarly journals Nonlinear Static Analysis of an Asphalt Concrete Core Dam dor Comparison of Three Constitutive Models

2012 ◽  
Vol 58 (4) ◽  
pp. 503-519
Author(s):  
Z. Hong ◽  
Z. Hongyan ◽  
D. Jianke
Keyword(s):  
Static Analysis ◽  
Yield Surface ◽  
Asphalt Concrete ◽  
Constitutive Models ◽  
Nonlinear Static Analysis ◽  
Surface Model ◽  
Characteristic Analysis ◽  
Concrete Core ◽  
Nonlinear Static ◽  
Double Yield

AbstractThe goal of this work is to compare different constitutive models in the nonlinear static characteristic analysis of asphalt concrete core dams. The Duncan E- μ model, Duncan E-B model and double-yield-surface model are three major constitutive models in the nonlinear static prediction of earth-rockfill dam. In this paper, an earth-rock fill dam with asphalt concrete core-wall in an actual hydraulic engineering is employed to compare the three models. The finite element model of the core-wall dam is proposed. Nonlinear static analysis of the dam is carried out and the static characteristics are obtained to study the differences generated from different constitutive models. Numerical results show that both the stress extremum and the stress distribution of dam body with three different models are coincident one another. In the deformation analysis of dam body and core-wall, the maximum values of sedimentation with the Duncan E-μ model and the Duncan E-B model, which are greater than the value with double-yield-surface model, are close to the practical test data though the deformation distributions with three models are in good agreement. But, the analysis results of core-wall stress with double-yield-surface model are proper and more reasonable than the other models.

scholarly journals Energy Consumption Analysis of Frozen Sandy Soil and an Improved Double Yield Surface Elastoplastic Model considering the Particle Breakage

2019 ◽  
Vol 2019 ◽  
pp. 1-13 ◽  
Author(s):  
Junlin He ◽  
Zhanyuan Zhu ◽  
Fei Luo ◽  
Yuanze Zhang ◽  
Zuyin Zou
Keyword(s):  
Energy Consumption ◽  
Sandy Soil ◽  
Yield Surface ◽  
Particle Breakage ◽  
Frozen Soil ◽  
Elastoplastic Model ◽  
Stress Strain ◽  
Energy Principle ◽  
Frozen Sandy Soil ◽  
Double Yield

The stress-strain relationship of frozen soil is a hot research topic in the field of frozen soil mechanics. In order to study the effect of particle crushing on the stress-strain relationship, a series of triaxial compression tests for frozen sandy soil are performed under confining pressures from 1 to 8 MPa at the temperatures of −3 and −5°C, and the energy consumption caused by particle breakage is analyzed during the triaxial shear process based on the energy principle. It is found that the energy consumption caused by the particle breakage presents a hyperbolic trend with axial strain. In view of the obvious advantages of the double yield surface elastoplastic model in describing soil dilatancy, stress path effect, and stress history influence, a modified double yield surface elastoplastic model for frozen sandy soil is proposed based on the energy principle. The validity of the model is verified by comparing its modeling results with test results. As a result, it is found that the stress-strain curves predicted by this model agree well with the corresponding experimental results under different confining pressures and temperatures.

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