Results 1 to 10 of about 357,154 (352)
Evolution of shear zones in granular materials [PDF]
Phys. Rev. E 90, 032205 (2014), 2014 The evolution of wide shear zones (or shear bands) was investigated experimentally and numerically for quasistatic dry granular flows in split bottom shear cells. We compare the behavior of materials consisting of beads, irregular grains (e.g. sand) and elongated particles.
Angenstein, Frank +8 more
arxiv +8 more sources
A bilateral shear layer between two parallel Couette flows [PDF]
Physical Review E 85, 036302 (2012), 2012 We consider a shear layer of a kind not previously studied to our knowledge. Contrary to the classical free shear layer, the width of the shear zone does not vary in the streamwise direction but rather exhibits a lateral variation. Based on some simplifying assumptions, an analytic solution has been derived for the new shear layer.
F. M. White +6 more
arxiv +3 more sources
Quartz c-axis fabric characterization of the strike-slip ductile deformation within the Three Pagodas shear zone, western Thailand [PDF]
Heliyon, 2022 The Three Pagodas shear zone is associated with mainland Southeast Asia deformations. The evolution of the shear zone is divided into deformation phases D1a, D1b, and D2.
Sittiporn Kongsukho +1 more
doaj +2 more sources
Refraction of shear zones in granular materials [PDF]
Phys. Rev. Lett. 98, 018301 (2007), 2006 We study strain localization in slow shear flow focusing on layered granular materials. A heretofore unknown effect is presented here. We show that shear zones are refracted at material interfaces in analogy with refraction of light beams in optics. This phenomenon can be obtained as a consequence of a recent variational model of shear zones.
arxiv +6 more sources
Core Precession and Global Modes in Granular Bulk Flow [PDF]
, 2005 A transition from local to global shear zones is reported for granular flows in a modified Couette cell. The experimental geometry is a slowly rotating drum which has a stationary disc of radius R_s fixed at its bottom. Granular material, which fills this cell up to height H, forms a wide shear zone which emanates from the discontinuity at the ...
Denis Fenistein +3 more
arxiv +5 more sources
Continuum approach to wide shear zones in quasi-static granular matter [PDF]
, 2005 Slow and dense granular flows often exhibit narrow shear bands, making them ill-suited for a continuum description. However, smooth granular flows have been shown to occur in specific geometries such as linear shear in the absence of gravity, slow inclined plane flows and, recently, flows in split-bottom Couette geometries.
G. Astarita +7 more
arxiv +7 more sources
Coexistence and Transition between Shear Zones in Slow Granular Flows [PDF]
Phys. Rev. Lett. 111, 148301 (2013), 2013 We report experiments on slow granular flows in a split-bottom Couette cell that show novel strain localization features. Nontrivial flow profiles have been observed which are shown to be the consequence of simultaneous formation of shear zones in the bulk and at the boundaries. The fluctuating band model based on a minimization principle can be fitted
Losert, Wolfgang +5 more
arxiv +3 more sources
The shear mechanical properties of rocks with variable angle joints [PDF]
Scientific ReportsVariable angle structural surfaces are more common in slopes. However, variable-angle joints have still been approximated as single-angle straight joint planes for analysis in previous studies, which failed to comprehensively capture the mechanical ...
Guoyong Duan +3 more
doaj +2 more sources
地质科技通报, 2022 Studying the strength characteristics of slip zone soils under different shear conditions is of great significance for the stability evaluation of reservoir landslides.
Fancheng Zhao +4 more
doaj +1 more source
Effect of Local Cyclic Loading on Direct Shear Strength Characteristics of Shear-Zone Soil
Applied Sciences, 2022 The reservoir landslide in the Three Gorges Reservoir Area (TGRA) often suffers from local cyclic loading scenarios produced by surge waves, groundwater level fluctuation, traffic loading, and seismic activity.
Qiong Chen +3 more
doaj +1 more source