Storage of cohesive Materials in Silos

摘要

Triaxial tests were prformed on specimens of oat flour and shorts under six confining pressures and three displacement rates. The relationships between equivalent stress and equivalent strain, and volume strain and equivalent strain were determined from the experimental data. The test variable confining pressure had a significant effect on both the equivalent stress-equivalent strain and the volume strain-equivalent strain relationships. There appeared to be no discernible effect of displacement rate on these relationships. Prediction equations expressing equivalent stress in terms of equivalent strain and confining pressure were developed for both materials. Also, prediction equations expressing volume strain as a function of equivalent strain and confining pressure were developed for the two materials. The stress-strain relations were used for a finite element analysis of silo wall pressures in the accompanying paper.