An infinitesimal eccentric rotational damping model for rolling resistance of circular particles

Y. L. Chang*, T. H. Chen, Meng-Chia Weng

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This study proposes an infinitesimal eccentric and rotational damping (IERD) model to consider the rolling resistance of circle particles through DEM simulation. The mass center of circular particle is firstly slightly adjusted to eccentricity for the effectiveness of rotational spring. Then, a local rotational damping is adopted to dissipate energy in the rotational direction. Compared with the repose angle tests of rod assemblies, the IERD model is verified and the results are quite satisfactory on the small scale model tests. In addition, the simulations using other existing models were also carried out and compared. In conclusion, the particle rolling simulation using the proposed model appears to approach the actual particle trajectory, making it useful for applications.

Original languageEnglish
Title of host publicationProceedings of the 13th International Conference on Civil, Structural and Environmental Engineering Computing
StatePublished - 1 Dec 2011
Event13th International Conference on Civil, Structural and Environmental Engineering Computing, CC 2011 - Chania, Crete, Greece
Duration: 6 Sep 20119 Sep 2011

Publication series

NameProceedings of the 13th International Conference on Civil, Structural and Environmental Engineering Computing

Conference

Conference13th International Conference on Civil, Structural and Environmental Engineering Computing, CC 2011
CountryGreece
CityChania, Crete
Period6/09/119/09/11

Keywords

  • Distinct element method
  • Eccentric circle model
  • Rotation damping

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