Chang, Y.L.Y.L.ChangChen, T.H.T.H.ChenMENG-CHIA WENG2026-03-242026-03-242011https://www.scopus.com/inward/record.uri?eid=2-s2.0-84863351015&partnerID=40&md5=d8ad7949c60d22ff1ef1e6c44849aa43https://scholars.lib.ntu.edu.tw/handle/123456789/73677813th International Conference on Civil, Structural and Environmental Engineering Computing, CC 2011, 6 September 2011 through 9 September 2011, Chania, CreteThis 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. © Civil-Comp Press, 2011.Distinct element methodEccentric circle modelRotation dampingconference paper2-s2.0-84863351015