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A State Parameter Based Generalized Plasticity Model for Unsaturated Soils

D. Manzanal1,2, M. Pastor2,3, J.A. Fern,ez Merodo4, P. Mira2,3

ETS de Ingenieros de Caminos, UPM , Madrid, Spain
Facultad de Ingeniería, UNPSJB, Comod. Rivadavia, Argentine
Laboratorio de Geotecnia, CEDEX, Madrid, Spain
Area de Investigación en Peligrosidad y Riesgos Geológicos, IGME, Madrid, Spain

Computer Modeling in Engineering & Sciences 2010, 55(3), 293-318.


This paper presents an extension of the Generalized Plasticity model proposed by Pastor - Zienkiewicz in 1986. The extension is based on (i) incorporating a state dependant parameter to model the mechanical behaviour of sand under a wide range of relative densities and confining pressures (ii) the definition of the effective stress of Schrefler (1984) modified to obtain unique CSL for different suction and (iii) the work conjugated variable proposed by Houlsby (1997). Several examples are presented for saturated and unsaturated soils.


Cite This Article

Manzanal, D., Pastor, M., Merodo, J. F., Mira, P. (2010). A State Parameter Based Generalized Plasticity Model for Unsaturated Soils. CMES-Computer Modeling in Engineering & Sciences, 55(3), 293–318.

This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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