Silo collapse under granular discharge
G. Guti\'errez, C. Colonnello, P. Boltenhagen, J. R. Darias, R., Peralta-Fabi, F. Brau, E. Cl\'ement

TL;DR
This study explores how cylindrical shells collapse under granular discharge, revealing stabilization effects due to granular wall friction and grain size influence, supported by a new fluid/structure theory and experimental validation.
Contribution
It introduces a novel fluid/structure theory that accounts for granular friction and imperfections, providing new scaling laws for silo collapse under granular discharge.
Findings
Critical filling height exceeds standard buckling estimates.
Granular wall friction stabilizes shells below collapse threshold.
Grain size significantly affects collapse behavior.
Abstract
We investigate, at a laboratory scale, the collapse of cylindrical shells of radius and thickness induced by a granular discharge. We measure the critical filling height for which the structure fails upon discharge. We observe that the silos sustain filling heights significantly above an estimation obtained by coupling standard shell-buckling and granular stress distribution theories. Two effects contribute to stabilize the structure: (i) below the critical filling height, a dynamical stabilization due to granular wall friction prevents the localized shell-buckling modes to grow irreversibly; (ii) above the critical filling height, collapse occurs before the downward sliding motion of the whole granular column sets in, such that only a partial friction mobilization is at play. However, we notice also that the critical filling height is reduced as the grain size, , increases.…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsGranular flow and fluidized beds · Mineral Processing and Grinding · Force Microscopy Techniques and Applications
