包装与食品机械2024，Vol.42Issue(4)：56-66,11.DOI:10.3969/j.issn.1005-1295.2024.04.009
基于DEM模拟的筒仓卸料过程瞬时拱影响因素分析
Analysis of influence factors of instantaneous arch during silo discharging process based on DEM simulation
摘要
Abstract
To explore the instantaneous arch formation condition of soybeans during the unloading process of silos and the influence rules of various factors on it,and to clarify the rheological characteristics of soybeans in silos,the discrete element method(DEM) was used,and the unloading process of soybeans in the silo was taken as the object to conduct simulations respectively by changing the semi cone angle,opening diameter,inter particle friction coefficient,material density and other parameters of the silo.The results show that when the half cone angles are 30°,35°,and 45°,the maximum pressure values are 2390.76,2289.53,2540.9 Pa,respectively;When the opening diameters are 50,60,70 mm,the unloading time are 103,62,40 s,respectively;When the friction coefficient is set to 0.6,0.7,0.8,the unloading time is 61.9,64.9,67.2s,respectively;When the density is set to 500,750,1000 mm,the maximum mass flow rates are 0.44,0.50,0.67 kg/s,respectively.The study provides a reference for seeking more accurate rheological properties of other bulk foods during the unloading process of silos.关键词
离散元方法/筒仓/卸料/瞬时拱/影响因素Key words
discrete element method(DEM)/silo/unloading/instantaneous arch/influence factor分类
机械制造引用本文复制引用
韦熙,周甲伟,徐耀杰..基于DEM模拟的筒仓卸料过程瞬时拱影响因素分析[J].包装与食品机械,2024,42(4):56-66,11.基金项目
国家自然科学基金项目(52275110) （52275110）
河南省科技攻关项目(232102220086) （232102220086）
河南省高校科技创新人才计划项目(24HASTIT044) （24HASTIT044）
