西北工程技术学报2025，Vol.24Issue(1)：15-22,8.
基于JKR黏结模型的木薯渣离散元仿真参数标定
Parameter Calibration of Cassava Pomace Discrete Element Simulation Based on JKR Bonding Model
摘要
Abstract
Cassava pomace is an ideal raw material for cultivation substrate.To optimize the design of operating machinery for cassava pomace cultivation substrate,accurately obtaining the discrete element simulation parameters of cassava pomace is an essential step.Taking cassava pomace with a measured moisture content of 3.75%as the object,a study was conducted on the calibration of its discrete element simulation parameters.The initial value of the stacking angle of cassava pomace was determined through a physical experiment.The main influencing factors were screened out,and their optimal value ranges were determined using the Plackett-Burman test and hill-climbing simulation.A Box-Behnken response surface test was carried out in EDEM to construct regression equations between the main influencing factors and the response indexes,optimizing the parameters with the target value of the physical stacking angle of 37.85°.The calibrated simulation parameters were ultimately obtained.The results indicate that the static friction coefficient of cassava pomace-cassava pomace,the static friction coefficient of cassava pomace-stainless steel and the rolling friction coefficient of cassava pomace-cassava pomace significantly impact the stacking angle of cassava pomace.By comparing the stacking angle simulation results with the physical test results under the calibrated parameters,it is found that the relative error in the stacking angle between the two is 3.59%,and the stacking morphology is highly similar,which verifies the accuracy of the calibrated simulation parameters.关键词
木薯渣/堆积角/基质/离散元/EDEM软件/参数标定Key words
cassava pomace/stacking angle/substrate/discrete element method/EDEM software/parameter calibra-tion分类
农业工程引用本文复制引用
蓝莹,刘兆祥,李培茂,陈睿,牟向伟,王俊,王敏娜..基于JKR黏结模型的木薯渣离散元仿真参数标定[J].西北工程技术学报,2025,24(1):15-22,8.基金项目
广西自然科学基金项目(2025GXNSFBA069533) （2025GXNSFBA069533）
广西重点研发计划项目(2021AB38023) （2021AB38023）
广西大学生创新创业训练计划资助项目(S202310602021) （S202310602021）
