個別要素法による粒子充填構造の安定性に関するシミュレーション

抄録

Stability of particle-packing structure was numerically studied using distinct element method. Complete spherical shape was assumed for composing particles while the radii were distributed in a certain range. First, the particles were set on lattice points of face-centered cubic structure, and the stability against the gravity was investigated. As a result, the structure was broken when the difference in radii of the particles was large. Then the stability against external load was simulated. In this case, the instability was observed earlier when the radius distribution was wide, whereas the structure was very stable when all particles had the same radius.