›› 2009, Vol. 30 ›› Issue (S2): 514-517.

• Numerical Analysis • Previous Articles     Next Articles

Discrete element simulation of biaxial compression test considering rolling resistance

JIANG Ming-jing1, 2, LI Xiu-mei1, 2, SUN Yu-gang1, 2, HU Hai-jun1, 2   

  1. 1. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 2. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China
  • Received:2009-08-17 Online:2009-08-10 Published:2011-06-21

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Abstract: A novel contact model incorporating rolling resistance proposed by Jiang et al.（2005）is implemented into PFC2D. The behavior of sand with rolling resistance is simulated by PFC2D with the novel contact model. Based on the biaxial compression test, the effect of rolling resistance on the behavior of sand is studied. And some microscopic parameters including the average coordination number and force chains are studied too. The results show that the rolling resistant is very important in controlling the peak strength and leading to extensive dilatancy of sand. With rolling resistance the loose sand can also have a strain-softening and shear-dilantant behavior. With the increasing of the rolling resistance, the average coordination number reduces

Key words: sand soil, discrete element method, rolling resistance, biaxial compression test

CLC Number: 

  • TU 411
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