抄録
A simple analysis is carried out to represent the stress pattern set up during emptying of a funnel-flow bin. In the first section of this analysis, so called "funnel flow" of solids in a bin is classified into four different types for characterizing the flow pattern and the stress pattern in the funnel-flow bin. An approximate theory for the dynamic wall pressure is then presented. The wall-pressure distribution is predicted from information on bin geometry and the frictional properties of the system alone. This analysis also reveals that under a particular condition a considerably high overpressure develops on the bin wall. A method for finding an optimum design condition is illustrated, with examples.
