Simulation Study on Threshing Device of Broad Bean Harvester Based on Discrete Element Method
According to the threshing requirements of different parts of the threshing drum,a combined threshing drum was designed using Solidworks software.Threshing simulation test settings were conduc-ted on the threshing device using software EDEM;A single factor threshing simulation experiment was conducted using drum speed,threshing clearance,and guide plate angle as experimental variables,and the impurity content and loss rate of the threshing device as evaluation indicators.The influence of drum speed,threshing clearance,and guide plate angle on threshing performance was preliminarily understood;On this basis,a suitable factor level was selected for a three factor and three level response surface experi-ment to obtain a regression model for the impurity content and loss rate of the threshing device.The opti-mal parameter combination of the combined threshing device was determined:drum speed 354r/min,threshing gap 29mm,and guide plate elevation angle 25 °;Finally,under the optimal parameter combina-tion conditions,the superiority of the designed threshing device was verified through field experiments.
broad beandiscrete element methodthreshing deviceparameter optimization
万方数据
维普
