This paper on "Numerical Aspects of Thermoelastoplastic Behaviour of Saturated Soil" was presented at the NAFEMS World Congress on Design, Simulation & Optimisation: Reliability & Applicability of Computational Methods - 9-11 April 1997, Stuttgart, Germany.

Summary

The theoretical aspects of fully coupled thermohydromechanical behaviour of saturated porous media is presented by considering the following assumptions. The fluid phase flows according to Darcy's law and energy transport is assumed to follow Fourier's law classically. Variation of water permeability, water and solid unit weight due to thermal effects and pore pressure changes are included. The elastoplastic behaviour of soil skeleton under mechanical and thermal loading is assumed. A finite element package is developed based on final matrix form obtained from discretization of integral form of field equations by finite element method and step-by-step integration in time. The computational steps of initial stress procedure with modified Newton-Raphson method for solving the non-linear equations are given. A very good agreement between the theoretical predictions and the experimental results was obtained for the several simple problems proposed by other authors.