农业机械学报2011，Vol.42Issue(10)：79-83,100,6.
基于EDEM的振动种盘中水稻种群运动规律研究
Analysis of Rice Seeds Motion on Vibrating Plate Using EDEM
摘要
Abstract
Rice seeds motion on a vibrating plate was simulated using discrete element method software EDEM. The mechanical interaction forces,both between seed and the plate and among the seeds were modeled by Hertz - Mindlin ( no slip). With the variation of vibration frequency,amplitude and seeds initial thickness,their effects on the seeds spatial distribution were analyzed. The simulation area was divided into uniform layers in vertical direction and the seeds spatial distribution in layers at different time was obtained. The simulation results showed that with the plate vibration frequency of 11 ~ 12 Hz,vibration amplitude of 12 -13 mm and seeds initial layer number of 3 ~5 ,the ideal seeds spatial distribution which was beneficial to improve suction precision could be received. Plate vibration frequency,vibration amplitude,seeds initial thickness and sucking distance were selected as influencing factors,then orthogonal experiments were carried out on test-rig and results indicated that the precision suction ratio was greater than 93% with the plate vibration frequency of 11 Hz,vibration amplitude of 12 mm and seeds initial layer number of 4.关键词
气吸式/精密播种机/超级稻/种群运动/仿真Key words
Air-suction/Precision seeder/Super rice/Seeds motion/Simulation分类
农业科技引用本文复制引用
陈进,周韩,赵湛,李耀明,龚智强..基于EDEM的振动种盘中水稻种群运动规律研究[J].农业机械学报,2011,42(10):79-83,100,6.基金项目
高等学校博士学科点专项科研基金资助项目(20103227120010) （20103227120010）
