基于离散元的颗粒肥料与PVC板之间的仿真参数的标定  

Calibration of Simulation Parameters between Granular Fertilizer and PVC Plate Based on Discrete Elements

作　　者：赵佳佳 韩静 韩晗 刘思岐 廖洪辉 曲欣锐 张天宇 Zhao Jiajia;Han Jing;Han Han;Liu Siqi;Liao Honghui;Qu Xinrui;Zhang Tianyu(College of Information and Electrical Engineering,Heilongjiang Bayi Agricultural University,Daqing 163000,China;College of Engineering,Heilongjiang Bayi Agricultural University,Daqing 163000,China)

机构地区：[1]黑龙江八一农垦大学电气与信息学院,黑龙江大庆163000 [2]黑龙江八一农垦大学工程学院,黑龙江大庆163000

出　　处：《农机化研究》2024年第1期54-58,共5页Journal of Agricultural Mechanization Research

基　　金：国家重点研发计划子课题(2016YFD020060802);黑龙江农垦总局重点项目(HKKY190504);黑龙江八一农垦大学人才科研启动基金项目(XDB202101)。

摘　　要：针对颗粒肥料在排肥管道内运动的离散元仿真缺乏准确仿真参数的问题,提出了一种基于颗粒物料与接触板材之间仿真参数的标定方法。将台架试验结果与EDEM仿真试验结果相结合,以尿素颗粒和软质PVC板为研究对象,得到尿素颗粒与软质PVC板之间碰撞恢复系数为0.302,静摩擦因数为0.525,滚动摩擦因数为0.158。经堆积角试验验证,台架试验与仿真试验相对误差为4.3%,证明了所标定参数的有效性。Aiming at the problem that the discrete element simulation of the movement of granular fertilizer in the drainage pipeline lacks accurate simulation parameters,a calibration method based on the simulation parameters between the granular material and the contact plate is proposed.Combining the real test results with the EDEM simulation experimental results,the collision recovery coefficient between the urea particles and the soft PVC plate was 0.302,the static friction factor was 0.525,and the rolling friction factor was 0.158,taking the urea particles and the soft PVC plate as the research object.After the accumulation angle test,the relative error between the real test and the simulation test is 4.3%,which proves the validity of the calibration parameters.

关 键 词：离散元法 PVC板 颗粒肥料 参数标定 

分 类 号：S183[农业科学—农业基础科学]