Disturbed state constitutive modeling based on stress-strain and nondestructive behavior

Desai, C. S.; Toth, J.

doi:10.1016/0020-7683(95)00115-8

Cited by 149 publications

(50 citation statements)

References 25 publications

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“…From the local calculation, the nominal strain rate attained under the applied tensile pulse is approximately 1000/s. Thus, from equation (7), the minimum crack radius can be calculated and the value is 0)0005 m. This value is used for the characteristic length l in equation (14). This value compares to the minimum dimensions of 0)0196, 0)0098, 0)00196, and 0)00098 m, respectively, for the four meshes selected in the calculations.…”

Section: Numerical Calculationsmentioning

confidence: 99%

Non-local effects on dynamic damage accumulation in brittle solids

Chen

1999

Int. J. Numer. Anal. Meth. Geomech.

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This paper presents a nonlocal analysis of the dynamic damage accumulation processes in brittle solids. A nonlocal formulation of a microcrack based continuum damage model is developed and implemented into a transient dynamic finite element computer code. The code is then applied to the study of the damage accumulation process ina concrete plate with a central hole and subjected to the action of a step tensile pulse applied at opposite edges of the plate. Several finite element discretizations are used to examine the mesh size effect. Comparisons between calculated results based on local and nonlocal formulations are made and nonlocal effects are discussed...

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Section: Numerical Calculationsmentioning

confidence: 99%

Non-local effects on dynamic damage accumulation in brittle solids

Chen

1999

Int. J. Numer. Anal. Meth. Geomech.

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“…The essential idea of the DSC is that the response of a material to variations in both internal and external conditions can be described in terms of the responses of the constituent material parts in two reference states, the &relative intact' state (RI) and the &fully adjusted' state (FA) [3,5,6]. The overall response of the material, i.e.…”

Section: Disturbed State Concept (Dsc)mentioning

confidence: 99%

Analysis of the compression of structured soils using the disturbed state concept

Liu

Carter

Desai

et al. 2000

Int. J. Numer. Anal. Meth. Geomech.

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SUMMARYThe aim of this note is to quantify the in#uence of soil structure on the compression behaviour of natural soils using the disturbed state concept (DSC). The behaviour of the fully adjusted state is chosen to be that of the corresponding soil in a reconstituted condition so that the disturbance function is a direct measure of the e!ects of soil structure. A new DSC compression model is proposed. This model is able to describe the compression behaviour of structured soils under loading, swelling and reloading. Special versions of the proposed model are also described for situations (a) where the compression behaviour of the corresponding reconstituted soils is linear in the e}ln p space and (b) where the compression is one-dimensional. The ability of the proposed model and its various versions to describe the compression behaviour of structured soils has been veri"ed.

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“…Specific constitutive models have been developed to describe the mechanical behaviors of rockfill materials [27][28][29]. Furthermore, some researchers [3,30,31] tried to propose constitutive models for rockfill materials based on the disturbed state concept (DSC), which was developed by Desai [32] and his coauthors [33][34][35][36][37][38]. Bounding surface plasticity, an important and comprehensive constitutive theory, was first developed for metals by Dafalias and Popov [39].…”

Section: Introductionmentioning

confidence: 99%

A 3D bounding surface model for rockfill materials

Xiao

Liu

Jun-gao

et al. 2011

Sci. China Technol. Sci.

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A 3D bounding surface model is established for rockfill materials, which can be applied to appropriately predict the deformation and the stabilization of rockfill dams. Firstly, an associated plastic flow rule for rockfill materials is investigated based on the elaborate data from the large-style triaxial compression tests and the true triaxial tests. Secondly, the constitutive equations of the 3D bounding surface model are established by several steps. These steps include the bounding surface incorporating the general nonlinear strength criterion, stress-dilatancy equations, the evolution of the bounding surface and the bounding surface plasticity. Finally, the 3D bounding surface model is used to predict the mechanical behaviors of rockfill materials from the large-style triaxial compression tests and the true triaxial tests. Consequently, the proposed 3D bounding surface model can well capture such behaviors of rockfill materials as the strain hardening, the post-peak strain softening, and the volumetric strain contraction and expansion in both two-and three-dimensional stress spaces. rockfill material, strength, dilatancy, 3D bounding surface, constitutive model Citation: Xiao Y, Liu H L, Zhu J G, et al. A 3D bounding surface model for rockfill materials.

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Disturbed state constitutive modeling based on stress-strain and nondestructive behavior

Cited by 149 publications

References 25 publications

Non-local effects on dynamic damage accumulation in brittle solids

Non-local effects on dynamic damage accumulation in brittle solids

Analysis of the compression of structured soils using the disturbed state concept

A 3D bounding surface model for rockfill materials

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