Journal article

Structural templates of disordered granular media

David M Walker, Antoinette Tordesillas, Jie Zhang, Robert P Behringer, Edward Ando, Gioacchino Viggiani, Andrew Druckrey, Khalid Alshibli

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES | PERGAMON-ELSEVIER SCIENCE LTD | Published : 2015

Abstract

Granular materials, in common with many complex systems, exhibit a range of self-organization processes that control their mechanical performance. Many of these processes directly manifest in the evolution of the contact network as the material responds to applied stresses and strains. Yet the connections between the topology, structure and dynamics of this evolving contact network remain poorly understood. Here we demonstrate that dense granular systems under a variety of loading conditions exhibit preferred structural ordering reminiscent of a superfamily classification. In particular, two distinct superfamilies are discovered: the first is typically exhibited by materials in the pre-failu..

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Grants

Awarded by US Army Research Office


Awarded by Australian Research Council


Awarded by NSF



Awarded by Div Of Civil, Mechanical, & Manufact Inn


Funding Acknowledgements

This work was partially supported by US Army Research Office (W911NF-11-1-0175, W911NF-1-11-0110), the Australian Research Council (DP120104759), NSF grants (NSF-DMR1206351, NSF-DMS1248071), NASA-NNX10AU01G and the Melbourne Energy Institute. AD, KA and AT thanks the US National Science Foundation and the Australian Academy of Science for support. We thank Mark Hopkins, Matthew Kuhn and Luc Sibille for kindly making data from their DEM simulations available for study. We thank the anonymous referees for helpful suggestions to improve the presentation of this manuscript.