锻压技术

沙柳颗粒致密成型过程中的颗粒轨迹及能耗研究

英文标题：Study on particle trajectory and energy consumption in dense forming process of Salix particle

单位：内蒙古科技大学

关键词：沙柳致密成型离散元运动轨迹能耗

分类号：S216

出版年,卷(期):页码：2020,45(7):107-116

摘要：

为研究沙柳颗粒致密成型过程中颗粒运动轨迹及各因素对能耗的影响，利用离散元软件EDEM进行模拟分析。模拟沙柳颗粒致密成型过程，分析不同粒径颗粒的运动轨迹，并对比研究了粒径、颗粒形状和压缩速度这3种因素对能耗的影响。结果表明：大颗粒（Ф3.2和Ф3.0 mm）的运动轨迹在致密成型过程中呈准直线状，小颗粒（Ф1.0和Ф0.8 mm）的运动轨迹在致密成型前期呈准直线状，致密成型后期的运动轨迹发生波动旋转；3种能耗影响因素中，颗粒形状对沙柳致密成型过程中的能耗影响最大，类球状颗粒成型效果最好，但消耗的能量最多；片状颗粒成型效果较差，但消耗的能量最少。粒径大小的影响较小，压缩速度对能耗的影响不显著。

In order to study the particle motion trajectory and the influences of various factors on the energy consumption during the dense forming process of Salix particle, the discrete element software EDEM was used for simulation and analysis, and the dense forming process of Salix particle was simulated. Then, the motion trajectories of particle with different particle diameters were analyzed, and the influences of particle diameters, particle shape and compression speed on the energy consumption were comparatively studied. The results show that the motion trajectories of large particles (Ф3.2 and Ф3.0 mm) are quasi-linear during the dense forming process, and the motion trajectories of small particles (Ф1.0 and Ф0.8 mm) are quasi-linear in the early stage of dense forming, but the motion trajectory in the later stage of dense forming fluctuates and rotates. Furthermore, among the three kinds of energy consumption influencing factors, the particle shape has the greatest influence on the energy consumption of Salix during the dense forming, the spherical particles have the best forming effect with the most energy consumption, and the flake particles have a poor forming effect with the least energy consumption. Finally, the effect of particle diameter is small, and the influence of compression speed on the energy consumption is not significant.

基金项目：

国家自然科学基金资助项目（51666016）

李震（1973-），男，博士，教授 E-mail：lizhen_730106@126.com 通讯作者：唐立新（1994-），男，硕士研究生 E-mail：776900590@qq.com

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