基于EDEM_Recurdyn耦合的马铃薯干式清土装置仿真分析

针对我国马铃薯采后清洗作业方式多为直接水洗,缺少与之配套的干洗预处理环节而极大地影响马铃薯清洗效果的问题.在前期研发基础之上,设计一种基于错位对向搓送组合的马铃薯干式清土装置.利用Recurdyn软件中的柔性模块将毛刷辊转化为柔性体并与EDEM软件耦合建立离散元仿真模型,对马铃薯干式清土装置的清土过程进行数值模拟.以马...

Simulation analysis of potato dry soil cleaning device based on EDEM_Recurdyn coupling

In view of the problem that the post-harvest cleaning of potatoes in China is mostly direct water washing,the lack of matching dry cleaning pretreatment links greatly affects the cleaning effect of potatoes.On the basis of the preliminary research and development,a potato dry cleaning device based on a staggered counter-rubbing combination was designed.The flexible module in the Recurdyn software was used to convert the brush roller into a flexible body and coupled with the EDEM software to establish a discrete element simulation model to simulate the soil cleaning process of the potato dry soil cleaning device.The speed of brush roller,the speed of rubber chain rod and the feeding amount were taken as experimental factors,and the collision times and stress of potato in the device were taken as evaluation indexes to analyze the smoothness of material transportation and the change of damage degree of material.The simulation results show that when the feeding amount is 3 t/h,the rubber chain rod rotation speed is 25 r/min,the first and third brush roller rotation speed is 40 r/min,and the second and fourth brush roller rotation speed is 56 r/min,the potato conveying performance is better and the impact force is less.According to the simulation results,verification tests are carried out,and the results are basically consistent with the simulation results.The research results can provide a theoretical basis for the subsequent experimental optimization of the potato dry soil cleaning device.