农业机械学报2026，Vol.57Issue(16)：107-115,129,10.DOI:10.6041/j.issn.1000-1298.2026.16.010
基于EDEM的茶树切割刀片仿真优化设计与试验
Simulation Optimization Design ad Experiment of Tea Tree Cutting Blade Based on EDEM
摘要
Abstract
In response to the complex mechanical behavior of branches during tea tree pruning and the variable cutting conditions,in order to improve the accuracy and reliability of the discrete element method in guiding the optimization design of the tea branch cutting device,a discrete element model of the aggregate was established,and on this basis,the cutting blade was optimized through the discrete element method(DEM)simulation.Taking mature tea trees as the object,the intrinsic parameters and surface contact parameters of the tea branches were measured through physical experiments.Based on the calibrated parameters,an EDEM simulation model of the cutting device was constructed,focusing on the three core parameters of the cutting angle,the blade angle,and the cutting speed.With the goal of maximum cutting force,Box-Behnken experiments were carried out to optimize the parameters of the cutting blade.A shear simulation experiment was conducted by using the calibrated discrete element parameters of the tea branch,and the relative error between the maximum cutting force obtained and the measured maximum cutting force was 2.25％.The optimal parameter combination of the blade was the cutting angle of 16.7°,the blade angle of 38.8°,and the cutting speed of 0.43 m/s.The EDEM simulation of the optimal parameter combination verified the relative error between the maximum cutting force and the regression equation prediction as 1.75％.The parameter calibration results of the tea branch aggregate discrete element model can provide a reference for tea tree cutting discrete element simulation,and the optimization design results of the cutting blade can be used for the subsequent development of tea harvesting equipment.关键词
茶树修剪机/参数标定/EDEM仿真/切割刀片参数优化Key words
tea tree pruning machine/parameter calibration/EDEM simulation/optimization of cutting blade parameters分类
农业科技引用本文复制引用
翁晓星,赵树武,王刚,谭云峰,谭大鹏..基于EDEM的茶树切割刀片仿真优化设计与试验[J].农业机械学报,2026,57(16):107-115,129,10.基金项目
2023年浙江省农机研发制造推广应用一体化试点项目(研发制造项目)、浙江省农业重大技术协同推广计划项目(2024ZDXT06-04)和金华市科技计划项目(2024-2-02) （研发制造项目）
