Effects of sample shape on the strain localization of water‐saturated clay

摘要: Strain localization is an important geotechnical problem related to large deformations and the onset of failure, such as slope failure. It necessary, therefore, clarify mechanisms strain geomaterials in order predict ground. For last two decades, many researchers have studied through both experimental numerical works. Most works, however, particularly studies, been treated two-dimensional plane problems for sake simplicity, even though actual phenomena are generally three dimensional. In understand deformation, clay under three-dimensional conditions, triaxial tests on their simulation performed present study. particular, focus mainly placed effects sample shape behaviour normally consolidated overconsolidated clays. A series undrained compression tests, using rectangular specimens with different shapes rates, conducted. Localized shear distributions successfully observed image analysis digital photographs. seen that a specimen affects various bifurcation clay, e.g. formation progress bands, failure buckling, etc. The finite element method, elasto-viscoplastic model considering structural changes, can reproduce generation growing process bands well. comparison between results experiment offers new findings regarding conditions.