Journal ArticleDOI
Controllability of the incremental response of soil specimens subjected to arbitrary loading programmes
TLDR
In this article, the authors show that the possibility of controlling the incremental response of a soil specimen subjected to an arbitrary loading program is lost at a stress level which is below the value for which failure occurs in ordinary tests.Abstract:
The paper shows that the possibility of controlling the incremental response of a soil specimen subjected to an arbitrary loading programme is lost at a stress level which is below the value for which failure occurs in ordinary tests. The relation between this level and other critical values (bifurcation into a shear band, peak of the stress deviator in an undrained test, stability under dead load) is discussed.read more
Citations
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Journal Article
Closure of "Static Instability and Liquefaction of Loose Fine Sandy Slopes"
TL;DR: In this paper, a series of conventional triaxial tests on fully saturated and on partly saturated specimens were performed under drained and undrained conditions to study the regions of stable and unstable behavior.
Journal ArticleDOI
Failure in geomaterials: continuous and discrete analyses
TL;DR: In this paper, the authors considered Hill's condition of stability and diffuse modes of failure in geomaterials in a dual framework: continuum mechanics and discrete mechanics, and concluded that the second order work criterion (under its dual form: continuous and discrete) can be a proper tool to analyse diffuse mode of failure.
Journal ArticleDOI
Instabilities in granular materials and application to landslides
Félix Darve,Farid Laouafa +1 more
TL;DR: In this article, the unstable states are detected by considering the sign of the second-order work in the second order work of the first order work and the stability analysis, performed for loose and dense sands under plane strain conditions, shows a large domain of instabilities in the stress space.
Journal ArticleDOI
Modelling of slope failure by a material instability mechanism
Farid Laouafa,Félix Darve +1 more
TL;DR: In this article, the failure phenomenon using a material stability criterion based on the sign of the second order work was modeled, and it was shown that unstable stress-strain states are reached strictly inside the plastic limit condition (set of admissible stresses).
Journal ArticleDOI
Bifurcation and second-order work in geomaterials
TL;DR: In this article, the ability of a material rate-independent system to evolve toward another mechanical state from an equilibrium configuration, with no change in the control parameters, is investigated, and the existence of both conjugate incremental strain and stress such that the second-order work vanishes is established as a necessary and sufficient condition for the appearance of bifurcation.
References
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Journal ArticleDOI
Conditions for the localization of deformation in pressure-sensitive dilatant materials
John W. Rudnicki,James R. Rice +1 more
TL;DR: In this paper, the authors investigated the hypothesis that localization of deformation into a shear band may be considered a result of an instability in the constitutive description of homogeneous deformation.
Journal Article
Closure of "Static Instability and Liquefaction of Loose Fine Sandy Slopes"
TL;DR: In this paper, a series of conventional triaxial tests on fully saturated and on partly saturated specimens were performed under drained and undrained conditions to study the regions of stable and unstable behavior.
Journal ArticleDOI
Nonassociated Flow and Stability of Granular Materials
TL;DR: In this paper, a series of triaxial tests designed to expose the type of behavior displayed by granular materials are presented and discussed, and reliability of the test results, the possible influence of viscous effects on the stability, and the effect of release of elastic energy are studied and discussed in detail.
Journal ArticleDOI
Instability of granular materials with nonassociated flow
TL;DR: In this paper, a series of triaxial tests designed to expose the type of behavior displayed by granular materials are presented and discussed and stability conditions for materials with nonassociated flow are presented.
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Conditions for the localization of deformation in pressure-sensitive dilatant materials
John W. Rudnicki,James R. Rice +1 more