基于离散元仿真参数的微型薯物料测定
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1.华中农业大学工学院;2.农业部马铃薯生物学与生物技术重点实验室

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湖北省科技创新重大项目(2016ABA092)、国家马铃薯现代农业产业技术体系项目(CARS-09-P08)


Determination of Materials for Potato Minituber Based on Discrete Element Simulation Parameters
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1.College of Engineering;2.Ministry of Agriculture Key Laboratory of Potato Biology and Biotechnology

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    摘要:

    在微型薯排种器、分级机等机械设备的设计过程中,物料的物理力学特征参数必不可少,随着仿真技术的发展,物料的接触力学参数也急需完善。针对这些问题,以微型薯“大西洋”、“中薯5号”和“华薯1号”为研究对象,以离散元软件EDEM中微型薯研究所需的相关参数为目标,测定微型薯的物理力学特征参数和接触力学参数;将上述测定后的参数输入EDEM进行仿真,求取微型薯之间的滚动摩擦系数;以堆积角为响应值,使用圆筒提升法验证仿真结果的可信度。结果表明:与试验实际堆积角相比,不同品种的微型薯仿真结果差异均低于3%,仿真结果可靠。

    Abstract:

    Physical and mechanical characteristic parameters are indispensable in the design of potato minituber related mechanical equipment planter and classifier, developing of simulation technology the contact mechanics parameters are also. Aiming at these problems, "Daxiyang", "Zhongshu No. 5" and "Huashu No. 1" were taken as research objects. The Physical mechanics parameters and contact mechanics parameters were determined with the relevant parameters required for discrete element software EDEM in potato minituber research. The parameters measured in the above experiment were input into the EDEM for simulation to obtain the rolling friction coefficient between the potato minituber. the stacking angle was used as the response value, and the credibility of the simulation results was verified by raising a round pipe slowly. The results show that compared with the actual accumulation angle of the experiment, the simulation results of different varieties of potato minituber are less than 3%, and the results are reliable.

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历史
  • 收稿日期:2019-11-21
  • 最后修改日期:2019-12-18
  • 录用日期:2019-12-23
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