Additional jamming transition in 2D bidisperse granular packings

Abstract

We present a jamming diagram for 2D bidisperse granular systems, capturing two distinct jamming transitions. The first occurs as large particles form a jammed structure, while the second, emerging at a critical small-particle concentration, $X_{\mathrm{S}}^{\ast }\approx 0.21$, and size ratio, ${\delta }^{\ast }\approx 0.25$, involves small particles jamming into the voids of the existing large-particle structure upon further compression. Below this threshold, small particles fill voids within the large-particle network, increasing packing density. Beyond this point, excess small particles disrupt efficient packing, resulting in looser structures. \jp{These results, consistent with previous 3D studies, demonstrate that the second transition occurs at a well-defined point in the $(X_{\mathrm{S}},\delta )$ plane, independent of dimensionality, likely driven by the geometric saturation of available space around particles, void closure, and structural arrangement.

5 pages, 4 figures (submitted to Physical Review Research)

References in corpus (18)

• Jamming at Zero Temperature and Zero Applied Stress: the Epitome of Disorder
• Jamming of Soft Particles: Geometry, Mechanics, Scaling and Isostaticity
• The Jamming Transition in Granular Systems
• Glass and Jamming Transitions: From Exact Results to Finite-Dimensional Descriptions
• A theory of amorphous packings of binary mixtures of hard spheres
• Multiple Glasses in Asymmetric Binary Hard Spheres
• Structural signatures of the unjamming transition at zero temperature
• Phase diagram and structural diversity of the densest binary sphere packings
• Two diverging length scales in the structure of jammed packings
• Tuning the bulk properties of bidisperse granular mixtures by small amount of fines
• Jamming in two-dimensional packings
• Mapping the jamming transition of bidisperse mixtures
• Sub-Jamming Transition in Binary Sphere Mixtures
• Dynamics in Colloidal Liquids near a Crossing of Glass- and Gel-Transition Lines
• Additional transition line in jammed asymmetric bidisperse granular packings
• Bulk Modulus along Jamming Transition Lines of Bidisperse Granular Packings
• Phase transition in the binary mixture of jammed particles with large size dispersity
• Structural transitions in jammed asymmetric bidisperse granular packings

Cited by in corpus (1)

• Mean-field model for the bubble size distribution in coarsening wet foams