茶叶科学2025，Vol.45Issue(2)：284-302,19.
基于DEM-MBD耦合算法的茶园仿生掘耕机优化与试验
Optimization and Testing of Tea Garden Biomimetic Tillage Machine Based on DEM-MBD Coupling Algorithm
摘要
Abstract
To solve the problems of high resistance and poor operation efficiency caused by soil compaction and stickiness in tea plantation cultivation,this study designed a tea plantation composite biomimetic tillage shovel based on the mole claw toe as a biomimetic prototype,and integrated it with a four-bar mechanism to develop a tea garden tillage machine.Firstly,a simulation analysis of the tillage process of a tea garden bionic tillage shovel was carried out based on the coupling algorithm of Discrete Element Method(DEM)and Multi Body Dynamics(MBD).At the same time,Design Expert 13 experimental design software was used to design and carry out a three-factor three-level simulation orthogonal combination experiment.It was found that when the tillage depth was 100 mm,the optimal working parameters of the tea garden biomimetic tillage machine with a composite biomimetic tillage shovel were the plowing shovel insertion angle of 33.506°,the driving arm speed of 289.923 r·min-1,and the tillage machine forward speed of 0.2 m·s-1.Subsequently,a comparative analysis of soil disturbance simulation based on soil particle velocity distribution was conducted under these working parameters.Finally,a comparative experiment was conducted in tea gardens using a composite biomimetic tillage shovel and a prototype shovel under the same working parameters.The results show that compared with the prototype shovel,the average resistance of the tea garden biomimetic tillage machine equipped with a composite biomimetic shovel was reduced by 5.70％,and the performance evaluation indicators such as soil fragmentation rate were improved.Its working performance can meet the requirements of tea garden cultivation.关键词
茶园耕作机械/离散元法/多体动力学/耦合算法/仿生结构设计Key words
tea garden tillage machine/discrete element method/multibody dynamics/coupling algorithm/biomimetic structural design分类
农业科学引用本文复制引用
贾治军,姚立健,杨自栋,刘皓央,马蓉,姜嘉胤,徐家俊,李杨,董春旺,宋文韬,李凯,韦持章,姚雨晨..基于DEM-MBD耦合算法的茶园仿生掘耕机优化与试验[J].茶叶科学,2025,45(2):284-302,19.基金项目
广西科技计划项目(桂农科AB241484030)、浙江省农业重大技术协同推广计划(2024ZDXT06)、浙江省"尖兵"研发攻关计划(2022C02010)、中央级公益性科研院所基本科研业务费专项(1610212021004) （桂农科AB241484030）
