Abstract
[Objective] To reveal the movement law and force chain characteristic evolution mechanism of stored rice seed particles during the settlement process in a silo. [Methods] With the Xinliangyou 98 hybrid rice seeds as the research object, a "rice seed-silo" simulation model was established using the discrete element method (DEM) to simulate the effect of different settlement heights, grain pile components, and mass flow rates on the fundamental parameters of rice seed settlement motion. A quantitative analysis method for the force chain characteristics of the rice seed population in the silo was proposed to investigate the influence patterns of different mass flow rates and settlement heights on force chain characteristics, thereby establishing the relationship between the settlement characteristics of rice seeds and the force chain behavior. [Results] During the descent of rice seeds, the acceleration gradually decreased to zero, and the falling velocity approached a stable value of 11.34 m/s. It took 4.13 seconds to reach a uniform velocity state, corresponding to a settlement height of 28.44 m. Under the same initial conditions, different grain pile components exhibited significant differences in their final velocities. Among them, stones reached the highest velocity of 16.8 m/s, and intact rice seeds attained 11.34 m/s. One-half, one-quarter, one-eighth incomplete particles and fine debris decelerated to 9.9 m/s, 8.3 m/s, 6.6 m/s, and 1.1 m/s, respectively, intensifying the interactions between different populations. As the mass flow rate increased from 100 kg/s to 250 kg/s, the number of force chains increased, and the force chain orientation coefficient decreased from 0.28 to 0.11. Meanwhile, the bearing non-uniformity of the force chains within the population gradually diminished, indicating a more even distribution of contact forces along the force chains. Lower mass flow rates result in a localized concentration of force chain bearing. [Conclusion] With the increase in the mass flow rate of the rice seed population, the force chain unit flexure gradually decreases, indicating that the increase in mass flow rate gradually alleviates the flexure of force chains. The mass flow rate has a significant influence on the evolution of force chain characteristics.
Publication Date
5-15-2026
First Page
43
Last Page
58
DOI
10.13652/j.spjx.1003.5788.2025.80450
Recommended Citation
Minna, WANG; Lintao, CHEN; Xu, MA; Xiangwei, MOU; Wenjun, ZHONG; and Huanyu, JIANG
(2026)
"Analysis of particle settlement characteristics and force chain evolution of rice seeds in silo based on discrete element method,"
Food and Machinery: Vol. 42:
Iss.
4, Article 6.
DOI: 10.13652/j.spjx.1003.5788.2025.80450
Available at:
https://www.ifoodmm.cn/journal/vol42/iss4/6
References
[1] 程月峰,孟兆新,王孟刚,等.三维运动混合机内食品颗粒混合效果数值模拟 [J].食品与机械,2024,40(12):65-71.CHENG Y F,MENG Z X,WANG M G,et al.Numerical simulation of food particle mixing effect in three-dimensional motion mixer [J].Food & Machinery,2024,40(12):65-71.
[2] 徐永江,王伟,谭忆秋.不同受力模式下的沥青混合料接触力链分布特征 [J].哈尔滨工业大学学报,2024,56(7):1-10.XU Y J,WANG W,TAN Y Q.Contact force chain distribution characteristics of asphalt mixture under different stress modes[J].Journal of Harbin Institute of Technology,2024,56(7):1-10.
[3] CERFONTAINE B,CIANTIA M,BROWN M J,et al.DEM study of particle scale and penetration rate on the installation mechanisms of screw piles in sand [J].Computers and Geotechnics,2021,139:104380.
[4] IRANMANESH A,PASSANDIDEH-FARD M.Two-dimensional modelling of free-surface flows in presence of a spherical object using the Modified Volume of Fluid technique[J].Marine Systems & Ocean Technology,2023,17(3):123-134.
[5] Le Thi Huyen Trang,李向红,苗金旭,等.湿热处理改性小麦粉 的 热 流 变 特 性 及 其 在 杂 粮 饼 干 中 的 应 用 [J].食 品 与 机 械,2025,41(5):135-142.Le Thi Huyen Trang,LI X H,MIAO J X,et al.Thermal rheological properties of heat-moisture modified and its application in multigrain cookies [J].Food & Machinery,2025,41(5):135-142.
[6] 吴兰,于少博.基于离散元的盘式磨粉机颗粒研磨仿真及参数优化 [J].食品与机械,2025,41(6):102-111.|WU L,YU S B.Particle grinding simulation and parameter optimization of disc mill based on discrete element [J].Food & Machinery,2025,41(6):102-111.
[7] 陈林涛,李开文,牟向伟,等.不同改流体对稻种颗粒在料仓卸料流动的影响 [J].农业工程学报,2023,39(21):36-46.CHEN L T,LI K W,MOU X W,et al.Effects of different modification fluids on the flow of rice seed particles during unloading in the silo [J].Transactions of the Chinese Society of Agricultural Engineering,2023,39(21):36-46.
[8] 王学文,QIN Y,李娟莉,等.散料在锥仓中的静压接触状态与影响因素 [J].农业工程学报,2015,31(16):65-70.WANG X W,QIN Y,LI J L,et al.Static contact statuses between conical silos and granular materials and its influential factors [J].Transactions of the Chinese Society of Agricultural Engineering,2015,31(16):65-70.
[9] 段 君 峰,韩 阳,揣 君.静 态 储 粮 筒 仓 内 部 水 平 压 力 试 验 研 究[J].粮食与油脂,2022,35(6):80-84.DUAN J F,HAN Y,CHUAI J.Experimental study on the internal horizontal pressure under static grain storage in silo [J].Cereals & Oils,2022,35(6):80-84.
[10] 朱广飞,白岩松,王松林,等.玉米干储一体仓气流场仿真分析与优化 [J].农业机械学报,2023,54(S1):381-390.ZHU G F,BAI Y S,WANG S L,et al.Simulation analysis and optimization of airflow field in integrated silo for corn drying and storage [J].Transactions of the Chinese Society for Agricultural Machinery,2023,54(S1):381-390.
[11] 崔宏伟,吴文福,吴子丹,等.基于粮温时空相关性的储粮数量监管方法研究 [J].农业机械学报,2019,50(1):321-330.CUI H W,WU W F,WU Z D,et al.Reserves monitoring method for grain storage based on temporal and spatial correlation of grain temperature [J].Transactions of the Chinese Society for Agricultural Machinery,2019,50(1):321-330.
[12] 施灿璨,周福君,夏吉庆,等.自然冷资源低温储藏仓设计与稻谷储藏试验 [J].农业机械学报,2017,48(11):375-382.SHI C C,ZHOU F J,XIA J Q,et al.Design of cool storage warehouse with natural cold resource and paddy storage experiment [J].Transactions of the Chinese Society for Agricultural Machinery,2017,48(11):375-382.
[13] HÄRTL J,OOI J Y,ROTTER J M,et al.The influence of a cone-in-cone insert on flow pattern and wall pressure in a full-scale silo [J].Chemical Engineering Research and Design,2008,86(4):370-378.
[14] WÓJCIK M,TEJCHMAN J,ENSTAD G G.Confined granular flow in silos with inserts:full-scale experiments [J].Powder Technology,2012,222:15-36.
[15] 冯永,刘宇,潘樊.基于球单元组合颗粒模型的筒仓卸粮速度 场 演 化 机 理 研 究 [J].应 用 力 学 学 报,2021,38(4):1 559-1 566.FENG Y,LIU Y,PAN F.Study on the evolution mechanism of silo unloading velocity field based on ball element composite particle model [J].Chinese Journal of Applied Mechanics,2021,38(4):1 559-1 566.
[16] ZARE D,NOURMOHAMADI-MOGHADAMI A,PANIGRAHI S S,et al.Dimensionless modeling of fine material distribution in an experimental silo during central spout loading [J].Journal of Stored Products Research,2023,100:102063.
[17] 吕都,唐健波,姜太玲,等.基于近红外光谱技术快速检测稻谷水分含量 [J].食品与机械,2022,38(2):51-56,63.LYU D,TANG J B,JIANG T L,et al.Research on rapid prediction model of rice moisture content based on near infrared spectroscopy [J].Food & Machinery,2022,38(2):51-56,63.
[18] 何颖臻,王明旭,王巍,等.平房仓仓底余粮清扫装置传送及收集仿真研究 [J].食品与机械,2024,40(2):91-96,220.HE Y Z,WANG M X,WANG W,et al.Simulation research on the transfer and collection part of warehouse bottom surplus grain cleaning device [J].Food & Machinery,2024,40(2):91-96,220.
[19] 崔熙灿,张凌凯,王建祥.高堆石坝砂砾石料的细观参数反演及三轴试验模拟 [J].农业工程学报,2022,38(4):113-122.CUI X C,ZHANG L K,WANG J X.Inversion of meso parameters and triaxial test simulation of the gravel materials for high rockfill dam [J].Transactions of the Chinese Society of Agricultural Engineering,2022,38(4):113-122.
[20] 刘克瑾,姚辉江,袁铮.平底筒仓中心卸料流态演化过程及仓壁压力波动性 [J].农业工程学报,2023,39(15):15-24.LIU K J,YAO H J,YUAN Z.Evolution process of center discharge flow pattern and pressure fluctuation of silo wall in a flat-bottomed silo [J].Transactions of the Chinese Society of Agricultural Engineering,2023,39(15):15-24.
[21] 张炜,萧伟健,袁传牛,等.基于三维离散元模型粉末压制中力链对阻塞行为的影响机制 [J].粉末冶金技术,2024,42(4):403-410,417.ZHANG W,XIAO W J,YUAN C N,et al.Influence mechanism of force chain on jamming behavior in powder compaction based on 3D discrete element model [J].Powder Metallurgy Technology,2024,42(4):403-410,417.
[22] 原方,刘海林,程远浩,等.深浅仓卸料压力离散元数值模拟研 究 [J].河 南 工 业 大 学 学 报 (自 然 科 学 版),2020,41(1):117-123.YUAN F,LIU H L,CHENG Y H,et al.Numerical simulation of discharge pressure of deep and shallow silos with discrete element [J].Journal of Henan University of Technology (Natural Science Edition),2020,41(1):117-123.
[23] 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.WEI X,ZHOU J W,XU Y J.Analysis of influence factors of instantaneous arch during silo discharging process based on DEM simulation [J].Packaging and Food Machinery,2024,42(4):56-66.
[24] 张涛,李修银,廖敏,等.糙米正面破碎特性与裂纹扩展规律[J].食品与机械,2022,38(2):88-92,110.ZHANG T,LI X Y,LIAO M,et al.Fron fracture characteristics and crack propagation law of brown rice [J].Food & Machinery,2022,38(2):88-92,110.
[25] 代峥峥,吴建章,朱文学,等.基于 MATLAB 的浅圆仓内玉米沉 降 运 动 特 性 分 析 [J].河 南 工 业 大 学 学 报 (自 然 科 学 版),2023,44(5):118-124.DAI Z Z,WU J Z,ZHU W X,et al.Analysis of the falling kinematic characteristic of corn in silo based on MATLAB [J].Journal of Henan University of Technology (Natural Science Edition),2023,44(5):118-124.
[26] 刘程,王旺平,宋少云.基于离散元 EDEM 的米粒破碎特性分析 [J].食品与机械,2022,38(9):88-92.LIU C,WANG W P,SONG S Y.Analysis of rice grain breakage characteristics based on discrete element EDEM [J].Food & Machinery,2022,38(9):88-92.
[27] 张淑媛,王森,侯耀龙,等.地槽通风高大平房仓仓内温度场研究 [J].食品与机械,2024,40(6):152-157.ZHANG S Y,WANG S,HOU Y L,et al.Study on temperature field in tall bungalow based on geosynclinal ventilation [J].Food & Machinery,2024,40(6):152-157.
[28] 陈正发,车刚,万霖,等.四向通风混流干燥段内稻谷流动特性研究:基于 EDEM [J].农机化研究, 2023,45(6):19-23,29.CHEN Z F,CHE G,WAN L,et al.Study on paddy flow characteristics in four-way ventilation mixed-flow drying section:based on EDEM [J].Journal of Agricultural Mechanization Research,2023,45(6):19-23,29.
[29] 张晓文,温国正,张建辉,等.基于 EDEM 的散体物料运输过程 中 物 料 粒 径 放 大 倍 数 对 料 流 的 影 响 研 究 [J].起 重 运 输 机械,2024 (5):43-47.ZHANG X W,WEN G Z,ZHANG J H,et al.On the influence of material particle size magnification on material flow during bulk material conveying based on EDEM [J].Hoisting and Conveying Machinery,2024 (5):43-47.
[30] 张炜,谈健君,张帅,等.基于颗粒物质力学的铁粉末压制中摩 擦 特 性 对 力 链 演 化 影 响 [J].摩 擦 学 学 报,2022,42(2):386-395.ZHANG W,TAN J J,ZHANG S,et al.Influence of tribological characteristics on the evolution of force chains in ferrous powder compaction based on granular matter theory [J].Tribology,2022,42(2):386-395.
[31] 陈庆发,刘军,刘恩江,等.多漏斗放矿过程散体介质接触力特 性 量 化 研 究 [J].中 国 有 色 金 属 学 报,2022,32(7):2 115-2 125.CHEN Q F,LIU J,LIU E J,et al.Quantitative study on contact force characteristics of granular medium in multi-funnel ore drawing process [J].The Chinese Journal of Nonferrous Metals,2022,32(7):2 115-2 125.
[32] 陈庆发,秦世康,杨承业.柔性隔离层下单漏斗散体矿岩力链演化特征模拟 [J].中国有色金属学报,2021,31(6):1 694-1 705.CHEN Q F,QIN S K,YANG C Y.Simulation on evolution characteristics of force chain in granular ore rock with single funnel under flexible isolation layer [J].The Chinese Journal of Nonferrous Metals,2021,31(6):1 694-1 705.
[33] 陈庆发,王少平,秦世康.柔性隔离层下多漏斗散体矿岩力链 演 化 特 征 的 离 散 元 模 拟 [J].工 程 科 学 学 报,2020,42(9):1 119-1 129.CHEN Q F,WANG S P,QIN S K.Discrete element simulation for evolution characteristics of multi-funnel mineral-rock force chain under flexible isolation layer [J].Chinese Journal of Engineering,2020,42(9):1 119-1 129.
[34] 徐竞,王峰,谭振华,等.堆垛方式及送风功率对冷库制冷效果的影响 [J].食品与机械,2023,39(12):133-138,161.XU J,WANG F,TAN Z H,et al.The influence of stacking mode and air supply power on cooling effect of cold storage[J].Food & Machinery,2023,39(12):133-138,161.
[35] 李震,张冬会,张鑫宇,等.香菇菌渣致密成型过程中颗粒黏结和断裂研究 [J].锻压技术,2023,48(12):188-195.LI Z,ZHANG D H,ZHANG X Y,et al.Study on particle bonding and fracture during dense forming process of mushroom residue [J].Forging & Stamping Technology,2023,48(12):188-195.
[36] ROTHENBURG L,BATHURST R J.Analytical study of induced anisotropy in idealized granular materials [J].Géotechnique,1989,39(4):601-614.
