S. Luding. Stress distribution in static two dimensional granular model media in the absence of friction. Phys. Rev. E, 55(4):4720-4729, 1997.  Home/Search   Document Not in Database   Summary   APS   Related Articles   Check

....large wavelengths is well reproduced by DSMC simu lations. 3.4 Heaps HSMC does not include static friction and the question is to what extent the formation of heaps can be reproduced. Using hard sphere molecular dynamics it has been shown that heap formation is possible without static friction [11] due to the steric effects caused by the excluded volume. Because the later is implemented on the coarse grained grid level it should also be possible to reproduce heaps with HSMC. DSMC on the other side is not capable to reproduce the behavior of granular matter in this case. This is a ....

S. Luding. Stress distribution in static two dimensional granular model media in the absence of friction. Phys. Rev. E, 55(4):4720-4729, 1997.

....kinds of grains are used, then the behavior may become more complex. It seems that there are not too many experimental results on segregation with more than two kinds or a continuous distribution of grains. However, the case of two types of particles has been studied by several authors. In [11] [12], 13] 14] and [15] the particles are modelled as hard spheres. In [11] and [12] qualitative features of the material are derived from laws for the contacts between individual particles. In [14] and [15] a cooling process is used to describe segregation, whereas in [13] pattern formation caused ....

....there are not too many experimental results on segregation with more than two kinds or a continuous distribution of grains. However, the case of two types of particles has been studied by several authors. In [11] 12] 13] 14] and [15] the particles are modelled as hard spheres. In [11] and [12] qualitative features of the material are derived from laws for the contacts between individual particles. In [14] and [15] a cooling process is used to describe segregation, whereas in [13] pattern formation caused by vibration is investigated. The behavior of the rolling matter on the surface of ....

Luding, S., Stress distribution in static two dimensional granular model media in the absence of friction,Phys. Rev. E 55 (1997), pp. 4720

.... Dynamics (MD) 52, 53] adjusted for inelastic particles with frictional forces [54 56] In section 3, averaging procedures are introduced to obtain macroscopic quantities from a micro description and, in section 4, quasi static granular assemblies are modeled using smooth, spherical particles [23]. Finally, in section 5, the influence of the particle eccentricity and of the building history are examined for frictional, polygonal particles [24] The results and consequences of the presented data are summarized and discussed in section 6. 2 Modeling soft particles The elementary units of ....

....the cartesian coordinates, i.e. the horizontal x and the vertical z in 2D. This stress tensor is an average over all contacts of the particles within the 4 RESULTS FOR SPHERICAL PARTICLES 7 volume V . In order to carry out the averaging in Eq. 8) one can sum over the contacts of only one particle [23]. In this case V has to be chosen so that all average volumes cover the whole system, a rather difficult task in the case of moving, polydisperse, possibly polygonal particles. The one particle averaging will thus be applied in the situation of almost monodisperse spherical particles only. The ....

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S. Luding. Stress distribution in static two dimensional granular model media in the absence of friction. Phys. Rev. E, 55(4):4720--4729, 1997.

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