CHARACTERISTIC DEFORMATION ANALYSIS OF GRANULAR MATERIALS
نویسندگان
چکیده
منابع مشابه
Fabric and Deformation in Granular Materials
The paper presents results of numerical experiments on a large assembly of smooth circular disks. The assembly was subjected to quasi-static biaxial loading at small to moderate strains by using the Discrete Element Method. Unlike the usual particle-based and coordination number approaches, the fabric was locally measured in relation to the shapes and orientations of voids. Deformation was meas...
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Triaxial compression studies of asphalt cement-treated granular materials indicate that each material exhibited a volume decrease during initial phases of stress-strain. The stress-strain curve was nearly linear until the material reached minimum volume, after which curvature increased rapidly. The analysis presented is based on the assumption that the point of minimum volume represents a yield...
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Strain in granular materials in quasistatic conditions under varying stress originate in (I) contact deformation and (II) rearrangements of the contact network. Depending on sample history and applied load, either mechanism might dominate. One may thus define rheological regimes I and II accordingly. Their properties are presented and illustrated here with discrete numerical simulation results ...
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The deformation characteristics of idealized granular materials have been studied from the micro-mechanical viewpoint, using Bagi’s three-dimensional micro-mechanical formulation for the strain tensor [Bagi, K. (1996), Mechanics of Materials 22: 165-177]. This formulation is based on the Delaunay tessellation of space into tetrahedra. The set of edges of the tetrahedra can be divided into physi...
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We investigate the quasistatic mechanical response of soils under cyclic loading using a discrete model of randomly generated convex polygons. This response exhibits a sequence of regimes, each one characterized by a linear accumulation of plastic deformation with the number of cycles. At the grain level, a quasiperiodic ratchetlike behavior is observed at the contacts, which excludes the exist...
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ژورنال
عنوان ژورنال: Doboku Gakkai Ronbunshu
سال: 1993
ISSN: 0289-7806,1882-7187
DOI: 10.2208/jscej.1993.481_87