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- W2153852874 abstract "ABSTRACT In this paper, the basics of the CD (contact dynamics) method for discrete element simulation of granular materials are presented. This method is the algorithmic formulation of nonsmooth granular dynamics at the scale of particle rearrangements where small elastic response times and displacements are neglected. Two major issues arising in this context are treated: 1) the contact laws expressed as complementarity relations between the contact forces and velocities and 2) the nonsmooth motion involving velocity jumps with impulsive unresolved forces as well as smooth motion with well-resolved static forces. A consistent description of the dynamics at the velocity level leads naturally to an implicit time-stepping scheme together with an explicit treatment of the evolution of the contact network. We discuss the role of the coarsegraining time, the precision issues and the relevance of the coefficients of restitution and their interpretation in a multicontact system." @default.
- W2153852874 created "2016-06-24" @default.
- W2153852874 creator A5059915162 @default.
- W2153852874 date "2008-08-01" @default.
- W2153852874 modified "2023-09-25" @default.
- W2153852874 title "Contact dynamics method" @default.
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- W2153852874 doi "https://doi.org/10.1080/19648189.2008.9693052" @default.
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