沈阳农业大学学报2025，Vol.56Issue(3)：126-136,11.DOI:10.3969/j.issn.1000-1700.2025.03.013
基于EDEM-RecurDyn的三七茎秆切割刀片仿真优化设计与试验
Simulation Optimization Design and Experiment of Panax notoginseng Stem Cutting Blades Based on EDEM-RecurDyn
摘要
Abstract
[Objective]To improve the accuracy and reliability of the discrete element method(DEM)in guiding the optimization design of Panax notoginseng stem cutting devices,a discrete element model of its root stem aggregate was established,and the cutting blade was optimized based on EDEM-RecurDyn coupling simulation.[Methods]Using 3-year-old mature Panax notoginseng root stems as the research object,the physical experiments were conducted to determine their intrinsic parameters,surface contact parameters,and maximum shear force parameters.The Plackett-Burman,Steepest Ascent,and Box-Behnken expriments were designed with the maximum shear force as the response value to calibrate the bonding parameters.Based on the calibrated parameters,an EDEM-RecurDyn coupling simulation model of the cutting device was constructed,and the Box-Behnken test was conducted to optimize the cutting blade parameters,including the cutting angle,blade angle,and blade thickness.[Results]The shear simulation test based on the calibrated bonding parameters of the Panax notoginseng stem discrete element model showed that the relative error between the simulated maximum shear force and the measured average maximum shear force was 1.95%.The optimal blade parameter combination was a cutting angle of 13.05 °,a blade angle of 44.27 °,and a blade thickness of 4.3 mm.The EDEM-RecurDyn coupling simulation verification of the optimal parameter combination showed that the relative error was 0.95%between the simulated maximum shear force and the predicted value.[Conclusion]The calibrated parameters of the Panax notoginseng root stem aggregate discrete element model can provide a reference for discrete element simulation of Panax notoginseng stem cutting,and the optimized cutting blade design can be applied to the development of subsequent Panax notoginseng harvesting equipment.关键词
三七茎秆/参数标定/耦合仿真/切割刀片参数优化Key words
Panax notoginseng stems/parameter calibration/coupled simulation/optimization of cutting blade parameters分类
农业工程引用本文复制引用
张永华,钟铭深,唐玉梅,张时翠,张宏友,杨文彩..基于EDEM-RecurDyn的三七茎秆切割刀片仿真优化设计与试验[J].沈阳农业大学学报,2025,56(3):126-136,11.基金项目
云南省重大科技专项(202102AE090042-06-04) （202102AE090042-06-04）
