Abstract
The flow patterns and stresses on the wall in a two‐dimensional flat‐bottomed bin with centric and eccentric discharges were investigated. The flow pattern histories of granular solids in the bin were recorded using a digital camcorder. A pressure gauge for simultaneously measuring the normal and shear stresses of granular solids was used. During filling with the granular material, the variations in stresses acting on the side walls with time were observed. The dynamic wall stresses were obtained during the centric and eccentric discharges. In addition, using Mohr's stress circle, an analysis of the stress state at the bin side‐wall was determined. The normal and shear stress fluctuation ranges predicted by Mohr's stress circle were close to the experimental results. The effect of the discharge slot position upon the wall stress was also demonstrated. Employing the results obtained using stress measurements and image processing, the pressure pulsation phenomena in a bin may be understood further.
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