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Void structure stability in wet granular matter and its application to crab burrows and cometary pits.

ABSTRACT: Cohesive granular matter can support stable void structures, which can universally be found in various scenes from everyday lives to space. To quantitatively characterize the stability and strength of a void structure in cohesive granular matter, we perform a simple tunnel-compression experiment with wet granular matter. In the experiment, a horizontal tunnel in a wet granular layer is vertically compressed with a slow compression rate. The experimental result suggests that the tunnel deformation can be classified into the following three types: (i) shrink, (ii) shrink with collapse, and (iii) subsidence by collapse. Using the experimental result, we estimate the stable limit of various void structures in a cohesive granular layer from crab burrows on a sandy beach to the pits observed on cometary surfaces.

SUBMITTER: Shinoda A

PROVIDER: S-EPMC6202372 | biostudies-other | 2018 Oct

REPOSITORIES: biostudies-other

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Void structure stability in wet granular matter and its application to crab burrows and cometary pits.

Shinoda Ayuko A Fujiwara Shin-Ichi SI Niiya Hirofumi H Katsuragi Hiroaki H

Scientific reports 20181025 1

Cohesive granular matter can support stable void structures, which can universally be found in various scenes from everyday lives to space. To quantitatively characterize the stability and strength of a void structure in cohesive granular matter, we perform a simple tunnel-compression experiment with wet granular matter. In the experiment, a horizontal tunnel in a wet granular layer is vertically compressed with a slow compression rate. The experimental result suggests that the tunnel deformatio ...[more]

PMID: 30361525

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