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Numerical study of force distribution/transmission in defected smooth hard-sphere crystal
AN Xizhong 1 * #,YANG Runyu 2,YU Aibing 2
1.School of Materials and Metallurgy, Northeastern University
2.Laboratory for Simulation and Modelling of Particulate System, School of Materials Science and Engineering, University of New South Wales
*Correspondence author
#Submitted by
Funding: 教育部博士点新教师基金(No.No. 20070145036)
Opened online:15 February 2011
Accepted by: none
Citation: AN Xizhong,YANG Runyu,YU Aibing.Numerical study of force distribution/transmission in defected smooth hard-sphere crystal[OL]. [15 February 2011] http://en.paper.edu.cn/en_releasepaper/content/4408624
Using discrete element method (DEM), we present the force distribution/transmission in three dimensional (3D) hard-sphere crystal formed by packing of smooth particles under 3D vibration with batch-wised feeding. The distribution P(F) of large forces between spheres and the base is compared with experimental results and shows good agreement. The results show different force behavior at void defect and twin structure (caused by stacking fault), where the former creates effects on P(F) and makes its shape of either in plane or inter plane force distribution curve much broader along the packing height; and the latter can only change the force orientation and no influence on the shape of P(F) distribution. On the other hand, the forces in perfect smooth hard sphere crystal transmitted along the lattice direction, which agrees well with experimental and numerical results on ordered packing.
Keywords:DEM simulation; Hard-sphere crystal; Force analysis

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