Mechanical behaviour of granular materials used in analogue modelling: insights from grain characterisation, ring-shear tests and analogue experiments

2006 ◽  
Vol 28 (9) ◽  
pp. 1710-1724 ◽  
Author(s):  
Marion Panien ◽  
Guido Schreurs ◽  
Adrian Pfiffner
Keyword(s):  
Granular Materials ◽  
Mechanical Behaviour ◽  
Shear Tests ◽  
Analogue Modelling ◽  
Ring Shear ◽  
Ring Shear Tests ◽  
Analogue Experiments ◽  
Materials Used

scholarly journals Effect of the Surface Roughness on the Shear Strength of Granular Materials in Ring Shear Tests

2019 ◽  
Vol 9 (15) ◽  
pp. 2977 ◽  
Author(s):  
Sueng-Won Jeong ◽  
Sung-Sik Park
Keyword(s):  
Surface Roughness ◽  
Shear Strength ◽  
Granular Materials ◽  
Rough Surfaces ◽  
Shear Velocity ◽  
Shear Tests ◽  
Ring Shear ◽  
Ring Shear Tests ◽  
Undrained Conditions ◽  
Drained And Undrained Conditions

Surface roughness plays an important role in estimating the shear strength of granular materials. A series of ring shear tests with different surface roughnesses (i.e., smooth and rough surfaces) were performed. A large-sized ring shear device, which is applicable for fine- and coarse-grained sediments, was developed to examine the shear strength of large particle sizes (i.e., commercial gravels with a mean grain size of 6 mm). In terms of surface roughness, the drainage- and shear-velocity-dependent shear strengths of the granular materials were examined. In this study, different shear velocities of 0.1, 0.5, and 1 mm/s were applied under drained and undrained conditions. The test results clearly show that shear stress is affected by drainage, shear velocity, and surface roughness. In particular, a typical strain-hardening behavior is exhibited regardless of the drainage and shear velocity condition. The measured shear strength obtained from both drained and undrained conditions increased with increasing shear velocity. All tests showed a large fragmentation using rough surfaces compared to the smooth surfaces of the device. The grain crushing was significant during shearing, even when normal stress was not applied. For a given shear velocity, surface roughness is an important feature in determining the shear strength of granular materials.

scholarly journals Modeling Granular Crushing in Ring Shear Tests: Experimental and Numerical Analyses

2006 ◽  
Vol 46 (2) ◽  
pp. 147-157 ◽  
Author(s):  
Sebastian Lobo-Guerrero ◽  
Luise Vallejo
Keyword(s):  
Numerical Analyses ◽  
Shear Tests ◽  
Ring Shear ◽  
Ring Shear Tests

scholarly journals Application of large-scale ring shear tests to the analysis of tsunamigenic landslides at the Stromboli volcano, Italy

Landslides ◽  
2009 ◽  
Vol 6 (3) ◽  
pp. 231-240 ◽  
Author(s):  
Daniela Boldini ◽  
Fawu Wang ◽  
Kyoji Sassa ◽  
Paolo Tommasi
Keyword(s):  
Large Scale ◽  
Stromboli Volcano ◽  
Shear Tests ◽  
Ring Shear ◽  
Ring Shear Tests
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