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| − | ''Antonio Gens<sup>1</sup>, Matteo O. Ciantia<sup>1</sup>, and Marcos Arroyo<sup>1</sup> | + | ''Antonio Gens<sup>1</sup>, Matteo O. Ciantia<sup>1</sup>, and Marcos Arroyo<sup>1</sup>'' |
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==Abstract== | ==Abstract== | ||
| − | + | The mechanical behavior of crushable granular materials is characterized by strong non-linearity and irreversibility. In this paper, the incremental behavior of crushable granular soils is investigated by numerically simulating three dimensional stress probing experiments on Distinct Element models consisting of a random assembly of spheres. Particle breakage is permitted and the initial high stress condition ensures that crushing will occur along some of the loading directions. The results obtained show that particle crushing considered as an additional source of plastic mechanism induces a change in the direction of the plastic flow and that this direction change is independent of the incremental loading path. This result is independent of damping and the magnitude of plastic strains tends towards an asymptotic value as damping increases. | |
| − | value as damping increases. | + | |
'''keywords''' Discrete element method, granular materials, incremental non linearity, particle crushing. | '''keywords''' Discrete element method, granular materials, incremental non linearity, particle crushing. | ||
Revision as of 12:14, 7 June 2016
Antonio Gens1, Matteo O. Ciantia1, and Marcos Arroyo1
| (1) Department of Geotechnical Engineering and Geosciences (ETCG) |
| Universidad Politécnica de Cataluña |
| Campus Nord UPC, 08034 Barcelona, Spain |
Abstract
The mechanical behavior of crushable granular materials is characterized by strong non-linearity and irreversibility. In this paper, the incremental behavior of crushable granular soils is investigated by numerically simulating three dimensional stress probing experiments on Distinct Element models consisting of a random assembly of spheres. Particle breakage is permitted and the initial high stress condition ensures that crushing will occur along some of the loading directions. The results obtained show that particle crushing considered as an additional source of plastic mechanism induces a change in the direction of the plastic flow and that this direction change is independent of the incremental loading path. This result is independent of damping and the magnitude of plastic strains tends towards an asymptotic value as damping increases.
keywords Discrete element method, granular materials, incremental non linearity, particle crushing.
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Published on 07/06/16
Licence: CC BY-NC-SA license
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