机械科学与技术2024，Vol.43Issue(4)：628-636,9.DOI:10.13433/j.cnki.1003-8728.20220258
水平振动式滚磨光整加工中力链演化及量化分析
Evolution and Quantitative Analysis of Force Chain in Process of Horizontal Vibration Mass Finishing
摘要
Abstract
In the process of mass finishing,the internal force chain network in media between masses affects the macroscopic behavior of granular matter,then affects the processing effect.In this paper,the numerical simulation model of horizontal vibration mass finishing is established to analyze the relationship between the dynamic evolution mechanism of mesoscopic force chain network and macroscopic motion behavior of granular media,and the quantitative characterization of force chain network is studied.The results show that the complex temporal and spatial distribution of force chain network determines the macroscopic motion behavior of granular matter.Increasing the excitation parameters,the fluidization appearance occurred in the granular media,the number of force chains decreases,the length and alignment coefficient of the strong chains decrease,but the strength increases,and the directivity tends to the gravity direction.The research provides an analytical method for forming the multi-scale research strategy of the mass finishing.关键词
水平振动滚磨/离散元法/颗粒物质/力链演化/量化表征/流态化Key words
horizontal vibration mass finishing/DEM/granular matter/force chain evolution/quantitative characterization/fluidization分类
数理科学引用本文复制引用
张凯,李秀红,李文辉,王嘉明,李昊..水平振动式滚磨光整加工中力链演化及量化分析[J].机械科学与技术,2024,43(4):628-636,9.基金项目
国家自然科学基金面上项目(51975399,51875389,52075362) （51975399,51875389,52075362）
