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- Scott W. Sloan, Andrew J. Abbo, Daichao Sheng
- 2003

Effective explicit algorithms for integrating complex elastoplastic constitutive models, such as those belonging to the Cam clay family, are described. These automatically divide the applied strain increment into subincrements using an estimate of the local error and attempt to control the global integration error in the stresses. For a given scheme, the… (More)

- Qianqian Cai, Brett D Turner, Daichao Sheng, Scott Sloan
- Journal of contaminant hydrology
- 2015

Industrial wastewaters often consist of a complex chemical cocktail with treatment of target contaminants complicated by adverse chemical reactions. The impact of metal ions (Cd(2+), Ba(2+) and Mn(2+)) on the kinetics of fluoride removal from solution by natural zeolite was investigated. In order to better understand the kinetics, the pseudo-second order… (More)

- Lijie Cui, Daichao Sheng
- 2006

In application to numerical analysis of geotechnical problems, the limit-state surface is usually not known in any closed form. The probability of failure can be assessed via the so-called reliability index. A minimization problem can naturally be formed with an implicit equality constraint defined as the limit-state function and optimization methods can be… (More)

- Daichao Sheng, Antonio Gens, Delwyn G. Fredlund, Scott W. Sloan
- 2008

This paper presents an overview of constitutive modelling of unsaturated soils and the numerical algorithms for solving the associated boundary value problems. It first discusses alternative stress and strain variables that can be used in constitutive models for unsaturated soils. The paper then discusses the key issues in unsaturated soil modelling and how… (More)

- Daichao Sheng, Delwyn G Fredlund
- 2008

This paper presents an overview of elasto-plastic modelling of unsaturated soils. Alternative stress and strain variables that have been used in constitutive models for unsaturated soils are discussed. The use of an effective stress equation may simplify constitutive relations, but often result in a stress space that depends on the material state. In this… (More)

- Xue Zhang, Daichao Sheng, George P Kouretzis, Kristian Krabbenhoft, Scott W Sloan
- Physical review. E, Statistical, nonlinear, and…
- 2015

We investigate numerically the mechanisms governing horizontal dragging of a rigid cylinder buried inside granular matter, with particular emphasis on enumerating drag and lift forces that resist cylinder movement. The recently proposed particle finite element method is employed, which combines the robustness of classical continuum mechanics formulations in… (More)

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