A very simple frictional plasticity model for a granular material is presented, including the effects of dilation. The novelty lies in the fact that this is described within the hyperplasticity framework, expressed using the terminology of convex analysis. This allows a consistent mathematical treatment of the dilation constraint. The Fenchel Dual is used to link the force and flow potentials. The resulting model accommodates non-associated flow within a rigorous mathematical framework that ensures compliance with the Laws of Thermodynamics.

Accepted:

Published online:

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@article{OGEO_2019__1__A3_0, author = {Houlsby, Guy T.}, title = {Frictional {Plasticity} in a {Convex} {Analytical} {Setting}}, journal = {Open Geomechanics}, eid = {3}, pages = {1--10}, publisher = {Alert Geomaterials}, volume = {1}, year = {2019}, doi = {10.5802/ogeo.2}, language = {en}, url = {https://opengeomechanics.centre-mersenne.org/articles/10.5802/ogeo.2/} }

Houlsby, Guy T. Frictional Plasticity in a Convex Analytical Setting. Open Geomechanics, Volume 1 (2019), article no. 3, 10 p. doi : 10.5802/ogeo.2. https://opengeomechanics.centre-mersenne.org/articles/10.5802/ogeo.2/

[1] Application of thermomechanical principles to the modelling of geotechnical materials, Proceedings of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, Volume 453 (1997), pp. 1975-2001 | DOI | Zbl

[2] A thermomechanical analysis of a family of soil models, Géotechnique, Volume 52 (2002) no. 7, pp. 507-518 | DOI

[3] A more fundamental approach to plastic stress-strain relations, Proc. of 1st US National Congress of Applied Mechanics, 1951 (1951), pp. 487-491

[4] A definition of a stable inelastic material, Journal of Applied Mechanics (1959), pp. 101-106 | Zbl

[5] Elastic moduli of soils dependent on pressure: a hyperelastic formulation, Géotechnique, Volume 55 (2005) no. 5, pp. 383-392 | DOI

[6] Study of plasticity theories and their applicability to soils, University of Cambridge (1981) (Ph. D. Thesis)

[7] Interpretation of dilation as a kinematic constraint, Modern approaches to plasticity, Elsevier: New York, 1992, pp. 19-38

[8] A thermomechanical framework for constitutive models for rate–independent dissipative materials, International journal of Plasticity, Volume 16 (2000) no. 9, pp. 1017-1047 | DOI | Zbl

[9] Principles of hyperplasticity: an approach to plasticity theory based on thermodynamic principles, Springer Verlag, London, 2006, 375 pages

[10] Plasticity: mathematical theory and numerical analysis, Springer, 1999 | Zbl

[11] The thermodynamics of plasticity and fracture, Cambridge University Press, 1992

[12] On unilateral constraints, friction and plasticity, New variational techniques in mathematical physics, CIME, 1974, pp. 173-322

[13] Stress-strain relations for clays: an energy theory, Géotechnique, Volume 17 (1967) no. 4, pp. 348-358 | DOI

[14] On the generalized behaviour of ‘wet’ clay, Engineering Plasticity (Heyman, J.; Leckie, F. A., eds.), Cambridge University Press, 1968, pp. 535-610 | Zbl

[15] Convex Analysis, Princeton University Press, NJ, 1970 | DOI | Zbl

[16] New results in subdifferential calculus with applications to convex optimization, Applied Mathematics and Optimization, Volume 32 (1995) no. 3, pp. 213-234 | DOI | MR | Zbl

[17] Critical state soil mechanics, McGraw–Hill London, 1968

[18] Fundamentals of Soil Mechanics, Wiley, New York, 1948

[19] An Introduction to Thermomechanics, North Holland, Amsterdam, 1977 (2nd edition 1983) | Zbl

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