Calibration and experimental verification of discrete element parameters of Panax notoginseng root

作     者：Kaiting Xie Zhaoguo Zhang Fa’an Wang Xiaolan Yu Chenglin Wang Shifei Jiang 

作者机构：Faculty of Mechanical and Electrical EngineeringKunming University of Science and TechnologyKunming 650500China Faculty of Modern Agricultural EngineeringKunming University of Science and TechnologyKunming 650500China Guizhou Agricultural Machinery Technology Promotion StationGuiyang 550003China Yunnan Tobacco Machinery Co.LtdKunming 650100China 

出 版 物：《International Journal of Agricultural and Biological Engineering》 (国际农业与生物工程学报（英文）)

年 卷 期：2024年第17卷第4期

页      面：13-23页

核心收录：

学科分类：1008[医学-中药学(可授医学、理学学位)] 10[医学] 

基　　金：supported by National Key R&D Program of China(Grant No.2022YFD2002004),Yunnan Fundamental Research Projects(Grant No.202401CF070144) “Xingdian Talent Support Program”Youth Talent Project of Yunnan Province(Grant No.KKXX202423055) 

主　　题：Panax notoginseng root EDEM parameter calibration separation test 

摘      要：Existing discrete element method-based simulation analysis of Panax notoginseng root soil separation still has the challenge to get the accurate and reliable basic parameters,which are necessary for discrete element *** this paper,the *** roots suitable for harvesting period were taken as the experimental *** using 3D scanning reverse modeling technology and EDEM software to establish the discrete element model of ***,based on which,the physical and virtual tests were carried out to calibrate the simulation ***,the basic physical parameters(density,triaxial geometric size,moisture content,shear modulus,and elastic modulus)and contact coefficients(static friction coefficient,rolling friction coefficient,and crash recovery coefficient between *** roots and 65Mn steel)were measured by physical ***,treating the contact coefficients of *** roots as the influence factor,the steepest uphill test,and four factors combing five levels of rotational virtual simulation are *** measured relative error accumulation angle and simulation accumulation angle are set as the performance *** results show that the static friction coefficient,rolling friction coefficient,crash recovery coefficient,and surface energy coefficient of *** roots are 0.55,0.35,0.16,and 19.5 J/m2,*** calibration results as parameters of the vibration separation simulation test of *** soil,the Box-Behnken vibration separation simulation tests were carried out,in which the vibration frequency,inclination angle,and vibration amplitude of separation device as factors,screening rate and damage rate of *** soil complex are regarded as *** results show that the optimal operating parameters of the separation device are the vibration frequency of 10 Hz,the inclination angle of 5°,and the amplitude of 6 *** on the optimal operation parameters,the discrete element