Granular Dynamics of Shaking

Tennakoon, Sarath G. K.; Doorn, Eric van; Behringer, Robert

doi:10.1007/978-94-017-2653-5_43

Cited by 2 publications

(17 citation statements)

References 11 publications

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“…For the case of steel spherical particles rolling on a copper substrate, the typical values of µ r are of the order of 10 −3 [21,22]. Realistic modeling of the experiments where rolling friction properties are of major importance (such as recent experiment [22], which explores a system consisting of two kind of particles, distinguished by their rolling friction) requires accounting for velocity dependence of µ r = µ r (|v|). We note that there is an additional frictional force, which slows down the rotations of the particles around their vertical axes.…”

Section: Rolling Without Sliding With Rolling Frictionmentioning

confidence: 99%

“…Very recently, it has been observed experimentally that many complex phenomena occur in the seemingly simple system of hard particles rolling and/or sliding on a substrate. In particular, clustering [21,22], and friction-based segregation [22] have been observed. While some of the experimental results (e.g.…”

Section: Introductionmentioning

confidence: 97%

“…While there have been substantial efforts to understand in more details the problem of the nature of interaction of a single particle with the substrate [1-10], these efforts have not being extended to the multiparticle situation. On the other hand, there has been recently a lot of interest in one [11][12][13][14][15][16] or two [17][18][19][20][21][22][23][24] dimensional granular systems. These systems are of considerable importance, since they provide useful insight into more complicated systems arising in industrial applications, and also because of many fascinating effects that occur in simple experimental settings and theoretical models.…”

Section: Introductionmentioning

confidence: 99%

“…In order to provide a better understanding of the importance of various particle and substrate properties that define the system (e.g. rolling friction, sliding, the inertial properties of the particles), we concentrate part of the discussion on monodisperse, hard (steel), perfectly spherical solid particles, moving on a hard (aluminum, copper) substrate [21][22][23]. However, through most of the presentation, the discussion is kept as general as possible, and could be applied to many other physical systems.…”

Section: Introductionmentioning

confidence: 99%

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Dynamics of spherical particles on a surface: Collision-induced sliding and other effects

Kondic

1999

Phys. Rev. E

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We present a model for the motion of hard spherical particles on a two-dimensional surface. The model includes both the interaction between the particles via collisions and the interaction of the particles with the substrate. We analyze in detail the effects of sliding and rolling friction, which are usually overlooked. It is found that the properties of this particulate system are influenced significantly by the substrate-particle interactions. In particular, sliding of the particles relative to the substrate after a collision leads to considerable energy loss for common experimental conditions. The presented results provide a basis that can be used to realistically model the dynamical properties of the system, and provide further insight into density fluctuations and related phenomena of clustering and structure formation.

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Section: Rolling Without Sliding With Rolling Frictionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Dynamics of spherical particles on a surface: Collision-induced sliding and other effects

Kondic

1999

Phys. Rev. E

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“…It also affects the mobility of particles on the surface. For example, segregation occurs when particles of differing surface properties are shaken on a smooth surface [5]. The second type of friction affecting particles is sliding friction.…”

Section: Introductionmentioning

confidence: 99%

Dynamics of two-particle granular collisions on a surface

Painter

Behringer

2000

Phys. Rev. E

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We experimentally examine the dynamics of two-particle collisions occuring on a surface. We find that in two-particle collisions a standard coefficient of restitution model may not capture crucial dynamics of this system. Instead, for a typical collision, the particles involved slide relative to the substrate for a substantial time following the collision; during this time they experience very high frictional forces. The frictional forces lead to energy losses that are larger than the losses due to particle inelasticity. In addition, momentum can be transfered to the substrate, so that the momentum of the two particles is not necessarily conserved. Finally, we measure the angular momenta of particles immediately following the collision, and find that angular momentum can be lost to the substrate following the collision as well.

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Granular Dynamics of Shaking

Cited by 2 publications

References 11 publications

Dynamics of spherical particles on a surface: Collision-induced sliding and other effects

Dynamics of spherical particles on a surface: Collision-induced sliding and other effects

Dynamics of two-particle granular collisions on a surface

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