Finite element analysis of fluid influence on instabilities in two-phase Cam-clay plasticity model
Keywords:
two-phase medium, finite element method, plasticity, Cam-clay model, gradient regularization, LocalizationAbstract
The influence of fluid phase on soil instabilities is investigated using the modified Cam-clay model within a two-phase description. Spurious mesh dependence of finite element results is prevented by a gradient enhancement of the model. The results of numerical tests for one-phase and two-phase model are compared. The influence of permeability on the stabilizing role of the fluid phase is assessed.
References
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[2] A. Benallal, C. Comi. On numerical analyses in the presence of unstable saturated porous materials. Int. J. Numer. Meth. Engrg., 56(6): 883-910, 2003.
[3] R. Borja. Cam-Clay plasticity. Part V: A mathematical framework for three-phase deformation and strain localization analyses of partially saturated porous media. Comput. Methods Appl. Mech. Engrg., 193: 5301- 5338, 2004.
[4] V.D. da Silva. Viscoplastic regularization of a Cam-clay FE-implementation. In W. Wunderlich, editor, Proc. European Conf. on Computational Mechanics ECCM'99, pp. 250- 251, paper no. 422, Munich, 1999. Technical University of Munich.
[5] R. de Borst, M.-A. Abellan. Dispersion and internal length scales in strain-softening two-phase media. In G. Meschke et al., editors, Proc. EURO-C 2006 Int. Conf. Computational Modelling of Concrete Structures, pp. 549-556, London/Leiden, 2006. Taylor & Francis.
Published
2022-09-27
Issue
pp. 669-682
Section
Articles
License
Copyright © The Author(s).
This work is licensed under the Creative Commons Attribution 4.0 International CC BY 4.0.
How to Cite
Stankiewicz, A., & Pamin, J. (2022). Finite element analysis of fluid influence on instabilities in two-phase Cam-clay plasticity model. Computer Assisted Methods in Engineering and Science, 13(4), 669-682. https://cames3.ippt.pan.pl/index.php/cames/article/view/897
