Difference between revisions of "A comparison of jamming behavior in systems composed of dimer- and ellipse-shaped particles"

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==Simulations==
 
==Simulations==
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[[Image: OHern_fig_2.jpg |thumb|right|400px|Fig. 1 Definition of the aspect ratio <math>\alpha</math> = a/b (ratio of the major to minor axes) for (a) ellipses and (b) dimers.]]
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[[Image: OHern_fig_1.jpg |thumb|right|400px|Fig. 1 Ensemble averaged contact number zJ at jamming as a function of aspect ratio <math>\alpha</math> for dimers (squares) and ellipses (circles) for N = 480 particles.]]
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(this entry is still in progress)
 
(this entry is still in progress)

Revision as of 03:14, 4 November 2010

Carl F. Schreck, Ning Xu and Corey S. O'Hern

Soft Matter 6 (2010) 2960-2969


wiki entry by Emily Russell, Fall 2010


The article can be found here.


Overview and Comments

This paper touches on several properties of jammed systems of concave dimers and concave elliptical particles, including jamming volume fraction, average contact number at jamming, vibrational mode spectrum, variation of shear modulus with volume fraction, stress-strain relations and yield stresses, and nematic ordering. It is a somewhat dense paper that goes rather quickly through all of these properties, but it argues effectively that the details of the shape of anisotropic particles can have significant effects on the behavior of jammed systems. Dimers behave similarly to simple disks in many ways, whereas ellipses show novel behaviors.


Simulations

Fig. 1 Definition of the aspect ratio <math>\alpha</math> = a/b (ratio of the major to minor axes) for (a) ellipses and (b) dimers.


Fig. 1 Ensemble averaged contact number zJ at jamming as a function of aspect ratio <math>\alpha</math> for dimers (squares) and ellipses (circles) for N = 480 particles.


(this entry is still in progress)