山东农业大学学报（自然科学版）2026，Vol.57Issue(3)：528-539,12.DOI:10.3969/j.issn.1000-2324.2026.03.013
基于DEM的圆盘切割装置仿真及优化
Simulation and Optimization of Disk Cutting Device Based on DEM
摘要
Abstract
To improve the working performance of the disc cutting device in a leek harvester and reduce the loss rate and missed cutting rate,this paper analyzes the cutting motion and force characteristics of the disc saw.It determines that during the contact phase,the frictional component must exceed the normal reaction component to ensure the smooth fall of the stems.The trajectory of the tooth tip during the cutting motion follows a cycloid.Through theoretical derivation,it concludes that the key influencing parameters are the operational speed of the machine,the rotational speed of the disc blade,and the cutting height.Building on this,combined with kinematics simulation,this paper constructs a quadratic polynomial regression model for the loss rate and missed cutting rate of the cutting platform,and then employs the Design-Expert software to complete the multi-factor optimization design.The experimental results indicate that when the machine operates at a speed of 0.4 m/s,the disc blade rotates at 3 016 r/min,and the cutting height is set to 43 mm,the header loss rate and the missed cutting rate decrease to 2.667%and 2.187%,respectively.Field test verification shows that the actual loss rate of the cutting platform is 2.85%,and the missed cutting loss rate is 2.35%,with relative errors of 6.9%and 7.5%compared to the optimized results,respectively.The optimized disc cutting device significantly improves the cutting performance.This study provides theoretical basis and technical support for the design and parameter selection of low-damage,high-efficiency leek harvesters.关键词
圆盘切割装置/离散元仿真/响应面优化/割台损失率/漏割率Key words
Disc cutting device/discrete element simulation/response surface optimization/loss rate of the cutting platform/missed cutting rate分类
农业科技引用本文复制引用
王博文,郭强,许厚卓,薛一豪,王鑫,张成军..基于DEM的圆盘切割装置仿真及优化[J].山东农业大学学报（自然科学版）,2026,57(3):528-539,12.基金项目
黑龙江省教育厅基本科研业务面上项目(145509222) （145509222）
齐齐哈尔大学研究生创新科研项目(QUZLTS_CX2025008) （QUZLTS_CX2025008）
2025年大学生创新创业项目(X202510232036,X202510232126) （X202510232036,X202510232126）
