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为了研究滚动摩擦在无底圆筒试验中的作用,利用EDEM软件对无底圆筒的试验过程进行仿真模拟,并通过仿真结果与模拟过程中颗粒角速度的分布情况,分析颗粒与颗粒之间、颗粒与地面之间以及颗粒与圆筒之间的滚动摩擦对整个成堆过程的影响。得出颗粒与颗粒之间的滚动摩擦相较于其他两者在成堆过程中作用最为明显,而颗粒与筒壁间的滚动摩擦的作用几乎没有影响,颗粒与地面之间的滚动摩擦的影响与颗粒形状有一定关系。
In order to study the role of rolling friction in bottomless cylinder test, the simulation process of bottomless cylinder was carried out by using EDEM software. Through the simulation results and the distribution of angular velocity in the process of simulation, the relationship between particles and particles, The effect of rolling friction between particles and the ground and between the particles and the cylinder on the entire stack. It is concluded that the friction between particles and particles is the most obvious in the pile-piling process compared with the other two, while the effect of rolling friction between particles and cylinder wall is almost unaffected. The influence of rolling friction between particles and the ground And the particle shape has a certain relationship.