Zagadnienia Doświadczalnej Weryfikacji Modelu Ciała Rozdrobnionego o Wzmocnieniu Gęstościowym
The model describes the fundamental properties of granular media in a wide range of deformation including the coupling of shearing and voluminal strains and also the dependence of plastic properties upon the density of the medium. The detailed analysis of the behaviour of the model subject to simple and complex loading paths is limited to the rigid-plastic model.
The methods of experimental verification and of determination of the material functions are also given. The considerations are illustrated by the examples in which the material functions were determined on the basis of experiments with triaxially compressed dry sand.
It is shown that a sufficient accuracy may be obtained by assuming the associated flow rule and the yield surface whose cross-section by the (σ1, √2 σ2)-plane has the form of a straight line segment and ellipse, depending linearly on the density.
R. CALLADINE, Correspondence: A theoretical and experimental study of strains in triaxial tests on normally consolidated clays, Geotechnique, 13, 3, 250-255, 1963.
A. DRESCHER, W. BOJANOWSKI, On the influence of stress path upon the mechanical properties of granular material, Arch. Inż. Lądow., 14, 3, 351 -365, 1968.
D. C. DRUCKER, Concept of path independence and material stability for soils, Rheol. Syrop. Grenoble, 23 -46, 1966.
Z. MRÓZ, On a theory of density-hardening media, Acta Mech. [w druku].
Z. MRÓZ, K. KWASZCZYŃSKA, Pewne problemy brzegowe dla ciał rozdrobnionych o wzmocnieniu gęstościowym, Rozpr. Inżyn., 19, 1, 15-42, 1971.
A. C. PALMER, Stress-strain relations for clays: an energy theory, Geotechnique, 17, 4,348 -359, 1967.
K. H. ROSCOE, A. N. SCHOFIELD, C. P. WROTH, On the yielding of soils, Geotechnique, 8, 1, 22 - 53, 1958.
K. H. ROSCOE, A. N. SCHOFIELD, A. THURAIRAJAH, Yielding of clays in states wetter then critical, Geotechnique, 13, 3, 211-240, 1963.
P. W. ROWE, Stress-dilatancy, earth pressures and slopes, J. Soil. Mech. Found. Div. ASCE., 89, 3, 37 - 61, 1963.
P. W. ROWE, L. BARDON, I. K. LEE, Energy components during the triaxial cell and direct shear tests, Geotechnique, 14, 3, 247-261, 1964.
A.N. SCHOFIELD, C.P. WROTH, Critical State Soil Mechanics, Mc Graw-Hill, 1968.
B. WACK, Determination experimentale de la denstte d'un sable a l'etat de plasticite, Existence d'un densite limite, Comptc Rend. Acad. Sci, Paris T, 260, 1965.
J. B. WEIDLER, P. R. PASLAY, Constitutive relations for inelastic granular medium, J. Eng. Mech. Div. ASCE, 96, 4, 395 -406, 1970.
C. P. WROTH, R. H. BASSET, A stress-strain relationship for the shearing behaviour of a sand, Geotechnique, 15, 1, 32 - 56, 1965.