以离散元方法研究抄板对RDX-Al混合效果的影响

Theoretical Calculation for the Influence of Mixing Effect of RDX-Al by Copy Board Using Discrete Element Model

采用离散元软件模拟单元空间内的颗粒存在体系,对旋转筒内搅拌混合过程中颗粒变化情况进行数值模拟,并以此为基础研究抄板对黑索金-铝粉(RDX-Al)混合效果的影响。考察抄板的长度、设置角度、添加个数以及填充率等对搅拌均匀程度的影响,并给出其最佳参数。根据研究结果,发现了当抄板的长度和旋转筒内半径的比值在0.4、抄板与旋转筒内壁的距离同旋转筒内半径的比值为0.2时,搅拌混合的效果最好。当装填量为40%,且加入的抄板量为4(或5)个的时候,搅拌混合效果最好。抄板设置的角度为75°时,搅拌混合的效果最好,本论文的研究结果将为现实工业生产中对RDX-Al的混合提供借鉴和指导。

The discrete dement software is used to simulate the particle system in the unit space. Based on the simulation of the particle change in the mixing process of the rotating drum, the effect of the plate on the mixing effect of RDX-A1 is studied. The influence of the length of the plate, the angle of setting, the number of addition and the filling rate on the degree of stirring uniformity are investigated, and the optimum parameters are given. The results show that the mixing effect is best when the ratio of the length of the plate to the radius of the rotating cylinder is 0.4 and the distance between the plate and the inner wall of the rotating cylinder is O. 2 of the radius of the rotating cylinder. When the loading amount is 40%,and the added amount of the plate is 4 （ or 5 ）, the stirring and mixing effect is best. When the plate setting angle is 75 degrees, the mixing effect is the best. The research conclusions of this paper will provide reference and guidance for the mixing of RDX-A1 in the actual industrial production.