基于离散元法的割草除根松土一体式刀片设计与试验

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中图分类号：S776 文献标识码：A DOI：10.7525/j.issn.1006-8023.2026.01.018

Design and Test of Integrated Blade for Mowing and Root Removal and Loosening Based on Discrete Element Method

LIN Zihang'，SHEN Rongfeng2*，WU Shangzhen’，ZHONG Wenbin'，WANG Yuandong' （1.CollegeofechaicaladElectricalEngineering，ujanAgricultureandForestryUniversityuzou35o2，in;2.ge of Transportationand Civil Engineering，Fujian Agriculture and Forestry University，Fuzhou 35oo02，China）

Abstract：Inorder to study the influenceofthe structural parameters of the integrated blade formowingand rootremoval andlooseing on itsoperational performance，this paper establishesathre-dimensional discrete element simulation modelbasedondiscreteelement method（EDEM）softwaretosimulate thesoil breakingefectof the bladeinthe process of soil grubbing operation.The influence offorward speed，rotationspeed and blade inclination angleonsoil breaking rate is analyzed through one-factor test，and Box-Behnken orthogonal test combined with response surface analysis is used to establish theprediction modelofsoil breakingrateandoptimize the parameters.Theresults oforthogonal test showthattheblade inclinationangleis themainfactoraffecting thesoil breakingrate，folowedbytherotation speed， andtheinteractionofthethree factors isalsosignificant.Under theoptimal combinationof parameters，withaforward speed of 1.39m/s ，a rotational speed of 107rad/s ，and a blade inclination angle of 4.7∘ ，the soil breaking rate reached 78.3% . The results of the study provide a theoretical basis and practical guidance forthe structural design and parameter configuration of mountain mowing and root removal and loosening devices.

Keywords： Lawn mower；dual blade；discrete element method;response surface； predictive model

0引言

丘陵山地地形复杂，杂草生长顽强且根系发达，单纯割除地上部分无法从根本上解决问题，杂草很快会再生蔓延。（剩余13822字）