Abstract
Extends the stress update algorithm and the tangent operator recently proposed for generalized plasticity by De Borst and Heeres to the case of partially saturated soils, where on top of the hydrostatic and deviatoric components of the (effective) stress tensor suction has to be considered as a third independent variable. The soil model used for the applications is the Bolzon-Schrefler-Zienkiewicz model, which is an extension of the Pastor-Zienkiewicz model to partial saturation. The algorithm is incorporated in a code for partially saturated soil dynamics. Back calculation of a saturation test and simulation of surface subsidence above an exploited gas reservoir demonstrate the advantage of the proposed algorithm in terms of iteration convergence of the solution.
Original language | English (US) |
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Pages (from-to) | 314-336 |
Number of pages | 23 |
Journal | Engineering Computations (Swansea, Wales) |
Volume | 18 |
Issue number | 1-2 |
DOIs | |
State | Published - Jan 1 2001 |
Keywords
- Plasticity
- Soil
- Stress
ASJC Scopus subject areas
- Safety, Risk, Reliability and Quality
- Applied Mathematics
- Computational Theory and Mathematics
- Computer Science Applications
- Computational Mechanics
- Mechanics of Materials
- Mechanical Engineering