Open AccessStudies of maximum static friction force in granular pile with probing rod
Author(s) -
Kong Wei-shu,
Hu Lin,
Du Xue-Neng,
Xinggang Zhang,
Weiming Wang,
Wu Yu
Publication year - 2007
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.56.2318
Subject(s) - pile , radius , materials science , volumetric flow rate , granular material , static friction , flow (mathematics) , mechanics , physics , composite material , structural engineering , computer security , computer science , engineering
Experiments are designed to explore the maximum static friction F on a dragged probing rod in a granular pile contained in a cylindrical vessel. The results show that F decreases with the radius R of the cylindrical vessel increasing when R is smaller than 0.040 m, and F scarcely changes with R for R >0.045 m. Curve fitting shows that F is as a function of h (the height of the granular pile), namely F=Ah+B(e-h/B-1), here the parameter A relates to the shape of probing rod and the flow rate of injecting granules into the cylindrical vessel, and parameter B depends on the flow rate of injecting granules into the cylindrical vessel.