Mechanics of Cohesive-frictional Materials

Volume 2, Issue 3 pp. 185-203

Research Article

Enhanced finite element formulation for geometrically linear fluid-saturated porous media

Areti Papastavrou,

Areti Papastavrou

Institut für Baumechanik und Numerische Mechanik, Universität Hannover, Appelstr. 9a, D-30167 Hannover, Germany

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Paul Steinmann,

Corresponding Author

Paul Steinmann

Institut für Baumechanik und Numerische Mechanik, Universität Hannover, Appelstr. 9a, D-30167 Hannover, Germany

Institut für Baumechanik und Numerische Mechanik, Universität Hannover, Appelstr. 9a, D-30167 Hannover, GermanySearch for more papers by this author

Erwin Stein,

Erwin Stein

Institut für Baumechanik und Numerische Mechanik, Universität Hannover, Appelstr. 9a, D-30167 Hannover, Germany

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Areti Papastavrou,

Areti Papastavrou

Institut für Baumechanik und Numerische Mechanik, Universität Hannover, Appelstr. 9a, D-30167 Hannover, Germany

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Paul Steinmann,

Corresponding Author

Paul Steinmann

Institut für Baumechanik und Numerische Mechanik, Universität Hannover, Appelstr. 9a, D-30167 Hannover, Germany

Institut für Baumechanik und Numerische Mechanik, Universität Hannover, Appelstr. 9a, D-30167 Hannover, GermanySearch for more papers by this author

Erwin Stein,

Erwin Stein

Institut für Baumechanik und Numerische Mechanik, Universität Hannover, Appelstr. 9a, D-30167 Hannover, Germany

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First published: 04 December 1998

https://doi.org/10.1002/(SICI)1099-1484(199707)2:3<185::AID-CFM21>3.0.CO;2-V

Citations: 13

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Abstract

This contribution is concerned with a new mixed finite element formulation for geometrically linear Terzaghi–Biot type fluid-saturated porous media. To this end, an extended Hu–Washizu type mixed variational principle is presented for fluid-saturated porous continua. Then, a suitable discretization and its implementation are discussed, resulting in an improved element behaviour especially in numerical localization analyses. The intriguing element performance is firstly demonstrated for the case of localization within an elastoplastic compression problem. Finally, an elastoplastic slope stability problem is examined, whereby the new element formulation proves to render more pronounced failure modes as compared with a standard element expansion. © 1997 John Wiley & Sons, Ltd.

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Volume2, Issue3

July 1997

Pages 185-203

Enhanced finite element formulation for geometrically linear fluid-saturated porous media

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Enhanced finite element formulation for geometrically linear fluid-saturated porous media

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