抄録
In the first report, we showed that the value of the vertical pressure of granular materials on the bottom of the model bin increases with the rate of filling. The reason for these phenomena is that the structure of deposition for granular materials changes with the rate of filling. This paper describes the correlation between the rate of filling and the bulk density of granular materials.
The value of bulk density of granular materials was measured under different filling rates with different volume glass cylinders and different heighs of falling. Four kinds of granular materials were used: two kinds of glass beads and two kinds of standard sands.
One of the experimental results is that the value of dulk bensity decrease with the rate of filling. However, the value of bulk density is affected by other factors, in particular the process of falling and deposition of granular materials.
