Constitutive Modeling of Soils and Rocks by Pierre-Yves Hicher, Jian-Fu Shao

By Pierre-Yves Hicher, Jian-Fu Shao

This name presents a finished evaluate of elastoplasticity in terms of soil and rocks. Following a normal define of the versions of habit and their inner constitution, every one bankruptcy develops a distinct region of this topic in relation to the author's specific services. the 1st 1/2 the publication concentrates at the elastoplasticity of sentimental soils and rocks, whereas the second one part examines that of tough soils and rocks.Content:
Chapter 1 the most sessions of Constitutive kinfolk (pages 1–30): Felix Darve
Chapter 2 Mechanisms of Soil Deformation (pages 31–76): Jean Biarez and Pierre?Yves Hicher
Chapter three Elastoplastic Modeling of Soils: Monotonous Loadings (pages 77–142): Philippe Mestat, Emmanuel Bourgeois and Philippe Reiffsteck
Chapter four Elastoplastic Modeling of Soils: Cyclic Loading (pages 143–186): Bernard Cambou and Pierre?Yves Hicher
Chapter five Elastoplastic habit of Ductile Porous Rocks (pages 187–210): Jian?Fu Shao and Shou?Yi Xie
Chapter 6 Incremental Constitutive kin for Soils (pages 211–260): Rene Chambon, Felix Darve and Farid Laouafa
Chapter 7 Viscoplastic habit of Soils (pages 261–298): Pierre?Yves Hicher and Isam Shahrour
Chapter eight harm Modeling of Rock fabrics (pages 299–346): Andre Dragon
Chapter nine Multiscale Modeling of Anisotropic Unilateral harm in Quasi?brittle Geomaterials: formula and Numerical functions (pages 347–376): Djimedo Kondo, Qizhi Zhu, Jian?Fu Shao and Vincent Pensee
Chapter 10 Poromechanical habit of Saturated Cohesive Rocks (pages 377–404): Jian?Fu Shao and Albert Giraud
Chapter eleven Parameter id (pages 405–432): Pierre?Yves Hicher and Jian?Fu Shao

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Its value for the kaolinite is close to that obtained for sands, corresponding to a high rigidity of the aggregates which causes them to behave more like sand grains. In this last case, the major deformation mechanisms of the continuous medium are due to relative displacements of grains or aggregates. 17. 3. Granular materials with intergranular glue The previous results correspond to materials for which the contact law between two grains is reduced to solid friction. If two grains in contact are also “glued”, the change in the contact law also produces a change in the mechanical properties of the 52 Constitutive Modeling of Soils and Rocks equivalent continuous medium.

Modélisation numérique de problèmes aux limites en mécanique des solides déformables”, Doctoral thesis, INPG/ENTPE, 1986. [TRU 74] C. TRUESDELL, Introduction à la Mécanique Rationnelle des Milieux Continus, Masson, 1974. C. VALANIS, “A theory of viscoplasticity without a yield surface”, Arch. , vol. 23, 517-551, 1971. ), publ. Balkema, 1984. ), publ. Balkema, 1988. Constitutive Modeling of Soils and Rocks Edited by Pierre-Yves Hicher & Jim-Fu Shao Copyright 0 2008, ISTE Ltd. 1. Introduction Mechanical soil behavior is generally studied within the framework of continuous medium mechanics, which provides a way of formulating constitutive models adapted to the specific nature of these materials.

4. Constitutive relations with n tensorial zones (n > 4) All these models have an incrementally piecewise linear structure. In the case of elastoplastic models with m plastic potentials, corresponding to m loading-unloading criteria, each state of stress can be located at the same time on m elastic limits, to which we can associate m flow rules. The elastic limit corresponds locally to a vertex, which can be interpreted as the creation of a local singularity by the stress state encountering the elastic limit surface and deforming it locally.

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