- Title
- A discrete model for rock impacts on muckpiles
- Creator
- Effeindzourou, A.; Thoeni, K.; Giacomini, A.; Sloan, Scott W.
- Relation
- 14th International Conference of the International Association for Computer Methods and Advances in Geomechanics (IACMAG 2014). Computer Methods and Recent Advances in Geomechanics (Kyoto, Japan 22-25 September, 2016) p. 1083-1088
- Publisher
- CRC Press
- Resource Type
- conference paper
- Date
- 2015
- Description
- This work consists of a preliminary numerical study on the impact behaviour of rock blocks on muckpiles using the Discrete Element Method (DEM). A contact law using a linear hysteresis model for normal contacts and a Mohr-Coulomb model for tangential contacts is used. In addition, two dissipative laws are introduced consisting of a moment transfer law and normal viscous damping law. One of the aims of this study is to investigate if the contact law enables a realistic modelling of the rebound characteristics of a block during impact on a muckpile. A parametric study is carried out in order to investigate the influence of the constitutive model parameters and the presence of clumps. Numerical predictions are compared to experimental results. It is shown that clumps in the muckpile are essential to reproduce realistic results.
- Subject
- discrte element method; muckpiles; Mohr-Coulomb model; rock impact
- Identifier
- http://hdl.handle.net/1959.13/1321190
- Identifier
- uon:24282
- Identifier
- ISBN:9781138001480
- Language
- eng
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