• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
  • Scopus
  • Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
  • Chinese S&T Journal Citation Reports
  • Chinese Science Citation Database
Volume 25 Issue 2
Mar.  2012
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Article Contents
DU Xin, ZENG Yawu, GAO Rui, YAN Jing, CAO Yuan. Effects of Particle Shape on Friction Mechanism Based on Discrete Element Method[J]. Journal of Southwest Jiaotong University, 2012, 25(2): 252-257. doi: 10.3969/j.issn.0258-2724.2012.02.014
Citation: DU Xin, ZENG Yawu, GAO Rui, YAN Jing, CAO Yuan. Effects of Particle Shape on Friction Mechanism Based on Discrete Element Method[J]. Journal of Southwest Jiaotong University, 2012, 25(2): 252-257. doi: 10.3969/j.issn.0258-2724.2012.02.014

Effects of Particle Shape on Friction Mechanism Based on Discrete Element Method

doi: 10.3969/j.issn.0258-2724.2012.02.014
  • Received Date: 14 Dec 2011
  • Rev Recd Date: 15 Dec 2011
  • Publish Date: 25 Apr 2012
  • In order to reveal the effects of particle shape on friction mechanism, frictions among non-viscous particles were decomposed into the macro biting-force and the mesoscopic biting-force. Impact and angle-of-repose (AOR) numerical tests were conducted to study the effects of particle shape on macro biting-force and mesoscopic biting-force by modeling irregular shape particles using discrete element method. The results of numerical tests show that the friction coefficient of irregularly shaped particles is nearly two times its interface friction coefficient, while the friction coefficient of ellipsoid particles is approximately equal to the interface friction coefficient. Meanwhile, different particle shapes endowed the particles with rolling or slipping characteristics, and influence the macro biting-force and the granular friction behavior.

     

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