固体物料造粒碰撞过程有限元仿真研究

为研究工艺参数对物料抛圆整形的影响,基于Abaqus仿真软件和内聚元法,对物料碰撞壁面过程进行数值模拟,研究颗粒在不同速度及结合能碰撞后的效果。结果表明:随速度增大,颗粒碰撞过程中剥落区增大,且在较高速度下(≥3 m/s),颗粒形貌变化较大。相同碰撞速度下,随颗粒结合能增大,颗粒剥落区减小。在碰撞速度为3 m/s,结合能为0.04J时,碰撞后颗粒的形貌更好,物料造粒效果较好。

Finite element simulation of solid material granulation collision process

In order to study the influence of process parameters on material morphology,the process of material impacting on wall was numerically simulated based on Abaqus simulation software and cohesive element method. The effect of particles colliding at different velocities and different internal binding energy of particles was studied. The results show that with the increase of velocity,the spalling area increases,and the morphology of particles changes greatly at higher velocity(≥3 m/s). With the increase of the internal binding energy of particles,the spalling area decreases at the same collision velocity. When the collision velocity is 3 m/s and the internal binding energy is 0.04 J,the particles have better morphology after collision. The granulation effect of materials after experiment is better.