摘要
由型孔轮式大豆排种器的三维CAD模型建立了其三维离散元法分析模型,采用球颗粒建立了大豆种子的分析模型,采用离散元法和自主研发的三维CAE软件对排种器的工作过程及性能进行了仿真分析,并与台架试验进行比较。结果表明,排种性能、投种角、种子运动轨迹与台架试验结果基本一致,证明了采用离散元法分析型孔轮式大豆排种器工作过程及其性能的可行性。
A cell wheel metering device and the soybean seed were researched by using the discrete element method.The 3-D discrete element method analytical model of the seed metering device was built on its 3-D CAD model extracted through the method which was based on graphic elements and the surface mesh,and the 3-D particle model of soybean seeds were established on the spherical particle.The metering performance,the trajectories and dropping angles of the soybean seeds were simulated and analyzed by using self-developed 3-D CAE software.It showed that the metering performance,the dropping angles and trajectories of the seeds were good agree with the experiment results by comparing the analytical results of simulation.This result showed the feasibility of using the discrete element method to analyze the performance of the cell wheel metering device.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2011年第12期83-87,101,共6页
Transactions of the Chinese Society for Agricultural Machinery
基金
国家高技术研究发展计划(863计划)资助项目(2006AA04Z125)
国家自然科学基金资助项目(50775097
60973090
11172112)
吉林省科技发展计划资助项目(20100313)
关键词
型孔轮式排种器
大豆种子
离散元法
优化设计
Cell wheel metering device
Soybean seeds
Discrete element method
Optimal design
