Three-node zero-thickness hydro-mechanical interface finite element for geotechnical applications: 6th International Conference on Computational Methods for Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2015

Cerfontaine, B., Dieudonne, A. C., Radu, J. P., Collin, F. and Charlier, R. (2015) Three-node zero-thickness hydro-mechanical interface finite element for geotechnical applications: 6th International Conference on Computational Methods for Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2015. In, Onate, Eugenio, Papadrakakis, Manolis, Schrefler, Bernhard A., Schrefler, B., Onate, E. and Papadrakakis, M. (eds.) Coupled Problems 2015. International Center for Numerical Methods in Engineering.

Abstract

The paper presents the main features of a hydro-mechanical coupled finite element of interface. The mechanical problem accounts for the detection of contact, the development of contact pressure, shearing and relative sliding between two solids. A three-node discretisation of hydraulic problem allows the representation of fluid flow across and in the plane of the interface. The method involves a drop of pressure between each side of the interface and the inner medium. Hydro-mechanical couplings result from 1) the definition of the total pressure acting on each side of the interface according to the Terzaghi's principle; 2) the dependence of permeability on the gap opening; 3) the variation of the fluid mass stored within the gap.

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Contributors

Author: B. Cerfontaine

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