廖庆喜,张朋玲,廖宜涛,余佳佳,曹秀英.基于EDEM的离心式排种器排种性能数值模拟[J].农业机械学报,2014,45(2):109-114.
Liao Qingxi,Zhang Pengling,Liao Yitao,Yu Jiajia,Cao Xiuying.Numerical Simulation on Seeding Performance of Centrifugal Rape-seed Metering Device Based on EDEM[J].Transactions of the Chinese Society for Agricultural Machinery,2014,45(2):109-114.
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基于EDEM的离心式排种器排种性能数值模拟   [下载全文]
Numerical Simulation on Seeding Performance of Centrifugal Rape-seed Metering Device Based on EDEM   [Download Pdf][in English]
投稿时间:2013-01-13  
DOI:10.6041/j.issn.1000-1298.2014.02.019
中文关键词:  离心式排种器 EDEM 数值模拟
基金项目:国家自然科学基金资助项目(51275197)、国家油菜产业技术体系专项资助项目(CARS-13)、“十二五”国家科技支撑计划资助项目(2010BAD01B06)和中央高校基本科研业务费资助项目(2011PY021)
作者单位
廖庆喜 华中农业大学 
张朋玲 华中农业大学 
廖宜涛 华中农业大学 
余佳佳 华中农业大学 
曹秀英 华中农业大学 
中文摘要:建立了离心式排种器的离散元仿真模型,对离心式排种器工作过程中油菜籽的运动过程进行了仿真分析,确定了油菜籽的运动规律并研究了内锥筒中种量与临界转速的关系、排种器转速与总排量的关系。仿真结果表明:随着内锥筒中的种子质量增多,临界转速呈递减趋势,而随着转速的增加,总排量呈增加趋势。仿真与台架试验验证结果一致,表明采用离散元法分析离心式排种器性能是可行的。
Liao Qingxi  Zhang Pengling  Liao Yitao  Yu Jiajia  Cao Xiuying
Huazhong Agricultural University;Huazhong Agricultural University;Huazhong Agricultural University;Huazhong Agricultural University;Huazhong Agricultural University
Key Words:Centrifugal metering device EDEM Numerical simulation
Abstract:The discrete element method (DEM) simulation model of centrifugal metering device was established, and the simulation analysis was conducted on the motion processes of rapeseeds during the centrifugal metering device working. The law of rapeseeds movement was determined, and the relationships between rapeseeds weight inside the cone and critical speed, rotational speed and seeding quantity were also studied, respectively. The simulation results showed that with the increase of rapeseeds weight in the cone, the critical speed had a decreasing trend, and the seeding quantity had an increasing trend with the increase of rotational speed. The simulation results were consistent with the test results. It showed that using DEM to analyze the performance of the centrifugal metering device was feasible.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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