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- W2002137284 abstract "Discrete element method (DEM) is prominent for studying granular materials at particle scale. However, how to model non-spherical particles in DEM is still challenging. In light of the present contact detection algorithms in the literature, common normal (CN) and geometric potential (GP) are two methods used for particles with smooth surfaces. Yet it has been long believed that CN gives erroneous results while GP is more preferable since they were firstly proposed for ellipsoidal particles decades ago. A revisit of CN in this work identifies two problems in the original CN, and then a new CN is proposed which can overcome these problems. Based on the comparison to sub-particle scale finite element analyses, the new CN has been further shown to be able to predict the contact plane more accurately than the original CN and GP. Such an advantage is found for the modelling of ellipsoidal and superquadric particles. The study not only proposes an improved CN algorithm but also demonstrates that CN should receive more attentions in DEM, though GP is now much more widely used." @default.
- W2002137284 created "2016-06-24" @default.
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- W2002137284 date "2003-12-01" @default.
- W2002137284 modified "2023-09-26" @default.
- W2002137284 title "The first 100 years of elastic anisotropy" @default.
- W2002137284 doi "https://doi.org/10.1016/j.jappgeo.2003.08.010" @default.
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