Structural features of jammed-granulate metamaterials

Götz H, Pöschel T, D'Angelo O (2024)

Publication Type: Journal article

Publication year: 2024

Journal

Physical Review Research American Physical Society

Book Volume: 6

Article Number: 013061

Journal Issue: 1

DOI: 10.1103/PhysRevResearch.6.013061

Abstract

Granular media near jamming exhibit fascinating properties, which can be harnessed to create jammed-granulate metamaterials: materials whose characteristics arise not only from the shape and material properties of the particles at the microscale but also from the geometric features of the packing. For the case of a bending beam made from jammed-granulate metamaterial, we study the impact of the particles' properties on the metamaterial's macroscopic mechanical characteristics. We find that the metamaterial's stiffness emerges from its volume fraction, in turn originating from its creation protocol; its ultimate strength corresponds to yielding of the force network. In contrast to many traditional materials, we find that macroscopic deformation occurs mostly through affine motion within the packing, aided by stress relief through local plastic events, surprisingly homogeneously spread and persistent throughout bending.

Authors with CRIS profile

Holger Götz Lehrstuhl für Multiscale Simulation of Particulate Systems Thorsten Pöschel Lehrstuhl für Multiscale Simulation of Particulate Systems Olfa D'Angelo Lehrstuhl für Multiscale Simulation of Particulate Systems

How to cite

APA:

Götz, H., Pöschel, T., & D'Angelo, O. (2024). Structural features of jammed-granulate metamaterials. Physical Review Research, 6(1). https://doi.org/10.1103/PhysRevResearch.6.013061

MLA:

Götz, Holger, Thorsten Pöschel, and Olfa D'Angelo. "Structural features of jammed-granulate metamaterials." Physical Review Research 6.1 (2024).

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