Abstract Slope angle and porosity are two important parameters to describe granular stockpile which is related closely to some phenomena in nature and various industries. In order to study influence of particle physical parameters to the shape, slope angle and porosity of the pile, corn pile experiments and calculations were investigated. The results showed that once physical parameters are chosen properly, simulation results are in good agreement with experimental ones. Particle density, Young's modulus and Poisson's ratio have little influence on the shape, slope angle and the porosity of the pile. Coefficient of restitution has some effects on the slope angle and porosity, which both decreases with the increase of restitution coefficient. Furthermore coefficient of static and rolling friction have obviously effects on the shape, slope angle and porosity of the pile and all this properties are more sensitive to the former.

中文翻译：

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玉米颗粒特性对桩形成的数值与试验研究

摘要 斜角和孔隙度是描述颗粒料堆的两个重要参数，与自然界和各行业中的一些现象密切相关。为了研究颗粒物理参数对桩的形状、坡度和孔隙率的影响，进行了玉米桩试验和计算。结果表明，一旦物理参数选择得当，模拟结果与实验结果吻合良好。颗粒密度、杨氏模量和泊松比对桩的形状、坡角和孔隙率影响不大。恢复系数对坡度和孔隙度有一定的影响，两者都随着恢复系数的增加而减小。此外静摩擦系数和滚动摩擦系数对形状有明显的影响，