A Cam-Clay-Based Fractional Plasticity Model for Granular Soil

2018 ◽  
pp. 74-78
Author(s):  
Yifei Sun ◽  
Yufeng Gao
Keyword(s):  
Granular Soil ◽  
Plasticity Model ◽  
Fractional Plasticity ◽  
Cam Clay

Effect of integrating memory on the performance of the fractional plasticity model for geomaterials

2018 ◽  
Vol 34 (5) ◽  
pp. 896-901 ◽  
Author(s):  
Yifei Sun ◽  
Yufeng Gao ◽  
Shunxiang Song
Keyword(s):  
Plasticity Model ◽  
Fractional Plasticity

Three-Dimensional State-Dependent Fractional Plasticity Model for Soils

2020 ◽  
Vol 20 (2) ◽  
pp. 04019161 ◽  
Author(s):  
Yifei Sun ◽  
Yufeng Gao ◽  
Shunxiang Song ◽  
Chen Chen
Keyword(s):  
Three Dimensional ◽  
Plasticity Model ◽  
State Dependent ◽  
Fractional Plasticity

scholarly journals An innovative procedure to improve integration algorithm for modified Cam-Clay plasticity model

2020 ◽  
Vol 124 ◽  
pp. 103604
Author(s):  
Manouchehr Sanei ◽  
Omar Duran ◽  
Philippe R.B. Devloo ◽  
Erick S.R. Santos
Keyword(s):  
Plasticity Model ◽  
Integration Algorithm ◽  
Modified Cam Clay ◽  
Cam Clay

scholarly journals Plastic Dissipation of the Fractional Plasticity using Modified Cam-Clay Yielding Function

2020 ◽  
Vol 36 (3) ◽  
pp. N1-N7
Author(s):  
P. Tai ◽  
Y. Sun
Keyword(s):  
Flow Rule ◽  
State Dependent ◽  
Plastic Dissipation ◽  
Modified Cam Clay ◽  
Plastic Potential ◽  
Classical Plasticity ◽  
Material State ◽  
Associated Flow Rule ◽  
Fractional Plasticity ◽  
Cam Clay

ABSTRACTSoils usually exhibit state-dependent frictional behaviour that undergoes plastic volumetric deformation. To correctly capture such response under the framework of classical plasticity, a non-associated flow rule using additional plastic potential is inevitably needed. Recently, a novel fractional plasticity (FP) without using plastic potential has been developed, and successfully applied in modelling the state-dependent nonassociated behaviour of soils. However, the energy dissipation characteristics of FP has not been probed in depth. This note examines the plastic dissipation behaviour of FP, when modelling the constitutive behaviour of soils. It is found that the plastic dissipation of FP increases continuously with the shear strain. However, the rate of plastic dissipation depends on the initial material state in relation to the critical state line.

Double‐Yield‐Surface Cam‐Clay Plasticity Model. I: Theory

1990 ◽  
Vol 116 (9) ◽  
pp. 1381-1401 ◽  
Author(s):  
H. S. Hsieh ◽  
E. Kavazanjian ◽  
R. I. Borja
Keyword(s):  
Yield Surface ◽  
Plasticity Model ◽  
Double Yield ◽  
Cam Clay

An Eight-Node Hexahedral Finite Element with Rotational DOFs for Elastoplastic Applications

2019 ◽  
Vol 11 (1) ◽  
pp. 54-66
Author(s):  
Ayoub Ayadi ◽  
Kamel Meftah ◽  
Lakhdar Sedira ◽  
Hossam Djahara
Keyword(s):  
Mathematical Model ◽  
Finite Element ◽  
Plastic Zone ◽  
Displacement Vector ◽  
Small Strain ◽  
Benchmark Problems ◽  
Plasticity Model ◽  
Vector Approximation ◽  
Calculation Code

Abstract In this paper, the earlier formulation of the eight-node hexahedral SFR8 element is extended in order to analyze material nonlinearities. This element stems from the so-called Space Fiber Rotation (SFR) concept which considers virtual rotations of a nodal fiber within the element that enhances the displacement vector approximation. The resulting mathematical model of the proposed SFR8 element and the classical associative plasticity model are implemented into a Fortran calculation code to account for small strain elastoplastic problems. The performance of this element is assessed by means of a set of nonlinear benchmark problems in which the development of the plastic zone has been investigated. The accuracy of the obtained results is principally evaluated with some reference solutions.

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