Journal Published Online: 04 May 2020
Volume 49, Issue 5

Discrete Element Modeling of Vibration Compaction Effect of the Vibratory Roller in Roundtrips on Gravels



This paper aims to study the vibration compaction mechanism of the vibratory roller on gravels using a two-dimensional discrete element method. The roadbed model was established by gravel particles with irregular shapes, which was closer to reality. The performance parameters of the vibratory roller, such as operating frequency and rolling velocity, were investigated to explore their influences on the operating efficiency of the vibratory roller in roundtrips. The frequencies of 15 Hz and 17 Hz were proved to be the optimal frequency and resonance frequency in the current simulations, respectively. The vibratory roller could achieve a better vibration compaction effect with less power consumption at the optimal frequency. In addition, the number of roundtrips and power consumption should be considered in the selection of the optimal rolling velocity. The movement direction and the contact force distribution of gravels were illustrated by the displacement field, velocity field, as well as the contact force chains. Our results provide a better understanding of the mechanical behavior of gravel particles and their interactions with the vibratory roller.

Author Information

Wu, Kai
Transportation School, Southeast University, Nanjing, China
Sun, Weichen
Transportation School, Southeast University, Nanjing, China
Liu, Songyu
Transportation School, Southeast University, Nanjing, China
Huang, Haibo
School of Geography, University College Cork, Cork, Ireland
Pages: 16
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Stock #: JTE20190910
ISSN: 0090-3973
DOI: 10.1520/JTE20190910