烟草除秆清根刀具作业过程离散元仿真分析  

Discrete element simulation of the operation process of tobacco stubble removal tool

作　　者：郑文鑫[1] 林恒矗 何金成[1] 张德晖[1] ZHENG Wenxin;LIN Hengchu;HE Jincheng;ZHANG Dehui(College of Mechanical and Electrical Engineering,Fujian Agriculture and Forestry University/Fujian Key Laboratory of Agricultural Information Sensoring Technology/Modern Agricultural Equipment Engineering Research Center of Fujian University,Fuzhou,Fujian 350002,China)

机构地区：[1]福建农林大学机电工程学院/福建省农业信息感知技术重点实验室/现代农业装备福建省高校工程研究中心,福建福州350002

出　　处：《福建农林大学学报（自然科学版）》2023年第4期563-572,共10页Journal of Fujian Agriculture and Forestry University:Natural Science Edition

基　　金：中国烟草总公司福建省公司科技计划项目(2022350000240086);福建省自然科学基金项目(2018J01611);福建农林大学科技创新专项基金项目(CXZX2017068);福建农林大学优势特色学科(机电)(722022012)。

摘　　要：仿真试验结果表明:刀具转速、刀具前进速度与除秆清根作业效率、根茬受力、根茬运动速度、根茬位移量呈正相关;刀具转速、刀具前进速度与根茬出现明显位移的时间节点呈负相关。根据响应曲面最优值求解刀具最佳工作参数,得到最佳刀具前进速度0.594 m·s^(-1),最佳刀具转速292.311 r·min^(-1),最佳挡板高度250 mm,理论根茬损失率2.89%,理论根茬脱土率93.60%。验证试验结果表明,平均根茬脱土率为97.61%,平均根茬损失率为3.59%,与理论值差异较小。The simulation test results show that the tool rotational speed and tool advancement speed are positively correlated with the efficiency of stubble removal operation,stubble force,stubble movement speed and stubble displacement,and the tool rotational speed and tool advancement speed are negatively correlated with the time point of significant stubble displacement.Response surface analysis revealed that the optimum operating parameters of the tool consisted of forward speed of 0.594 m·s^(-1),rotational speed of 292.311 r·min^(-1)and baffle height of 250 mm,resulting in a theoretical stubble removal rate of 93.60%and stubble loss of 2.89%,which were very close to the actual average stubble removal rate(97.61%)and stubble loss rate(3.59%)by verification test.

关 键 词：除秆清根 刀具设计 离散元 作业过程 

分 类 号：S225[农业科学—农业机械化工程]