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Scaling effects in direct shear tests

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DOI: 10.1063/1.3179949

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Abstract

Laboratory experiments of the direct shear test were performed on spherical particles of different materials and diameters. Results of the bulk friction vs. non-dimensional shear displacement are presented as a function of the non-dimensional particle diameter. Simulations of the direct shear test were performed using the Discrete Element Method (DEM). The simulation results show Considerable differences with the physical experiments. Particle level material properties, such as the coefficients of static friction, restitution and rolling friction need to be known a priori in order to guarantee that the simulation results are an accurate representation of the physical phenomenon. Furthermore, laboratory results show a clear size dependency on the results, with smaller particles having a higher bulk friction than larger ones. ?? 2009 American Institute of Physics.

Additional Publication Details

Publication type:
Conference Paper
Publication Subtype:
Conference Paper
Title:
Scaling effects in direct shear tests
ISBN:
9780735406827
DOI:
10.1063/1.3179949
Volume
1145
Year Published:
2009
Language:
English
Larger Work Title:
AIP Conference Proceedings
First page:
413
Last page:
416
Number of Pages:
4
Conference Title:
6th International Conference on Micromechanics of Granular Media, Powders and Grains 2009
Conference Location:
Golden, CO
Conference Date:
13 July 2009 through 17 July 2009