Abstract：Given that most of existing DEM simulations are based on regular polygonal particles, which is greatly differ from realistic particle shapes, this study quantifies the shape features of broken graded stones. By using the Digital image processing technique, the particle contours are acquired. From the acquired contours, the particle shape features are analyzed by using several shape indexes that belong to different scales. The statistical analysis demonstrates that these indexes, namely aspect ratio and angularity are independent from the particle size. The DEM simulation is afterwards employed to investigate the relationship between particle shape features and void ratio of porous granular materials. The result demonstrates that the void ratio increases when the aspect ration increase, while the void ratio decreases when particles are rounded.
安爱军 聂志红. 级配碎石形状量化及其对堆积特性的影响[J]. 土木工程学报, 2019, 52(S2): 1-6, 13.
An Aijun Nie Zhihong. Quantifying the shape features of graded broken stone and its impacts on#br#
the packing behaviors. 土木工程学报, 2019, 52(S2): 1-6, 13.
