NDLI: An efficient algorithm for granular dynamics simulations with complex-shaped objects

Content Provider	Springer Nature Link
Author	Alonso Marroquín, Fernando Wang, Yucang
Copyright Year	2009
Abstract	One of the most difficult aspect of the realistic modeling of granular materials is how to capture the real shape of the particles. Here we present a method to simulate two-dimensional granular materials with complex-shaped particles. The particle shape is represented by the classical concept of a Minkowski sum, which permits the representation of complex shapes without the need to define the object as a composite of spherical or convex particles. A well defined interaction force between these bodies is derived. The algorithm for identification of neighbor particles reduces force calculations to O(N), where N is the number of particles. The method is much more efficient, accurate and easier to implement than other models. We prove that the algorithm is consistent with energy conservation, which is numerically verified using non-dissipative granular dynamics simulations. Biaxial test simulations on dissipative granular systems demonstrate the relevance of shape in the strength and stress fluctuations at the critical state.
Starting Page	317
Ending Page	329
Page Count	13
File Format	PDF
ISSN	14345021
Journal	Granular Matter
Volume Number	11
Issue Number	5
e-ISSN	14347636
Language	English
Publisher	Springer-Verlag
Publisher Date	2009-07-16
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Granular systems Dynamics and kinematics of rigid bodies Molecular dynamics methods Engineering Thermodynamics, Heat and Mass Transfer Industrial Chemistry/Chemical Engineering Geoengineering, Foundations, Hydraulics Materials Science Engineering Fluid Dynamics Soft and Granular Matter, Complex Fluids and Microfluidics
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy Mechanics of Materials Materials Science

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