干旱地区农业研究2025，Vol.43Issue(3)：299-314,16.DOI:10.7606/j.issn.1000-7601.2025.03.30
基于EDEM仿真的不同驱动式圆盘刀作业性能对比与分析
Comparison and analysis of the operating performance of different drive-type disc cutters based on EDEM simulation
摘要
Abstract
To investigate the differences in the operational performance of various driven disc knives during no-tillage operations under conditions of heavy straw mulching and full straw coverage in Southwest China,this study focused on bionic disc knives,notched disc knives,and corrugated disc knives,analyzing their force states during straw cutting.Single-factor EDEM discrete element simulations and three-factor,three-level orthogonal field com-parison tests were conducted on a self-developed anti-clogging device,with the following experimental factors:types of forward-rotating disc knives,types of forward-and-reverse-rotating disc knives,forward speed of the machine,and rotational speed of the disc knives.Evaluation indicators included the number of broken bonding keys(indica-ting straw cutting rate),soil disturbance,and machine passage ability.Simulation test results indicated that,under identical conditions,the number of broken bonding keys and machine passage ability were superior in the order of forward-rotating bionic disc knives>forward-rotating notched disc knives>forward-rotating corrugated disc knives,and similarly for forward-and-reverse-rotating disc knives.Soil disturbance showed an opposite trend.Field test re-sults showed that when the straw coverage was 1.432 kg·m-2,the type of disc knife had the most significant im-pact on the straw cutting rate.Operational effectiveness aligned with simulation test results across various rotational and forward speeds of the machine.Under conditions of heavy straw mulching and full straw coverage,bionic disc knives outperformed traditional disc knives in all aspects except soil disturbance.Only the forward-and-reverse-rota-ting bionic disc knife met operational requirements and demonstrated superior performance.This study provides a theoretical foundation for the rational design and applicability analysis of stubble-cutting and trenching components in no-tillage seeders under heavy straw mulching and full straw coverage conditions.关键词
圆盘刀/驱动式/EDEM仿真/防堵装置/秸秆切断率Key words
disc knife/driven/EDEM simulation/anti-blocking device/straw cutting rate分类
农业科技引用本文复制引用
朱惠斌,秦晋,白丽珍,钱诚,王明鹏,李镕东..基于EDEM仿真的不同驱动式圆盘刀作业性能对比与分析[J].干旱地区农业研究,2025,43(3):299-314,16.基金项目
国家自然科学基金(52265033,51865022) （52265033,51865022）
云南省重点基金(202401AS070115) （202401AS070115）
