圆盘圆形振荡下多颗粒体系的运动  

Motion of a Multi-particle System under Circular Oscillation of a Disk

作　　者：崔津赫 王烽 崔晋秦 何宁怀 赵光菊 刘艳辉 刘树成 CUI Jinhe;WANG Feng;CUI Jinqin;HE Ninghuai;ZHAO Guangju;LIU Yanhui;LIU Shucheng(School of Physics,Guizhou University,Guiyang,Guizhou 550025)

机构地区：[1]贵州大学物理学院,贵州贵阳550025

出　　处：《物理通报》2024年第7期75-80,共6页Physics Bulletin

基　　金：贵州大学2024年实验室开放项目;编号:SYSKF2024-076;2023年教育部第二批国家级一流本科课程:贵州大学《大学物理1》;2022年贵州省普通本科高校省级“金课”(一流课程):贵州大学《大学物理1》。

摘　　要：对第十四届物理学术竞赛第15题——“煎饼旋转”进行了实验研究,运用PFC仿真软件对系统构建并进行模拟,同时自行设计装置对圆盘做圆形振荡的情况进行了详细的研究.得出了影响粒子碰撞反向运动的相关因素:摩擦阻尼、颗粒大小、圆盘振荡频率、绕轴半径.实验和仿真模拟结果一致,并得出圆盘中的粒子团随摩擦阻尼、粒子半径的增大,更容易出现反向运动;但随圆盘振荡频率的增大,不容易出现反向运动.随绕轴半径的增大,临界粒子数先减小后增大.The 15th question of the 14th Physics Academic Competition,“Pancake Rotation”,was experimentally studied,the system was constructed and simulated by PFC simulation software,and the circular oscillation of the disc was studied in detail by designing a device by itself.The relevant factors influencing the reverse motion of the particle collision are obtained:frictional damping,particle size,disk oscillation frequency,and radius around the axis.The experimental and simulation results are consistent,and it is concluded that the particle clusters in the disk are more likely to move in the opposite direction with the increase of friction damping and particle radius,but are not easy to move in the opposite direction with the increase of the oscillation frequency of the disk.With the increase of the radius around the axis,the number of critical particles decreases first and then increases.

关 键 词：多颗粒体系 圆形振荡 临界粒子 仿真实验 

分 类 号：O31-4[理学—一般力学与力学基础] G642[理学—力学]