English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Monodisperse packings of dry, air-fluidized granular media typically existbetween volume fractions from $\Phi$= 0.585 to 0.64. We demonstrate that thedynamics of granular drag are sensitive to volume fraction $\Phi$ and theirexists a transition in the drag force and material deformation from smooth tooscillatory at a critical volume fraction $\Phi_{c}=0.605$. By dragging asubmerged steel plate (3.81 cm width, 6.98 cm depth) through $300 \mu m$ glassbeads prepared at volume fractions between 0.585 to 0.635 we find that below$\Phi_{c}$ the media deformation is smooth and non-localized while above$\Phi_{c}$ media fails along distinct shear bands. At high $\Phi$ thegeneration of these shear bands is periodic resulting in the ripples on thesurface. Work funded by The Burroughs Wellcome Fund and the Army Research LabMAST CTA

Ripples and Shear Bands in Plowed Granular Media