Numerical Simulation Of Tobacco Leaf Beating Process Based On Finite Element Model Of Cohesive Force

Tobacco industry,as an important economic industry in Yunnan,has important practicability and economy in the research of tobacco threshing process.In the process of practical research,it is usually just field experiment and experience summarization,which leads to low research efficiency and waste of raw materials.In this paper,the threshing process of tobacco leaves was studied by numerical simulation.Through direct measurement and indirect measurement,the basic physical parameters of tobacco leaf finite element simulation model is determined,the tensile displacement curve of tobacco leaf is obtained,the bilinear constitutive relation of tobacco leaf cohesion is determined,and the constitutive parameters of tobacco leaf cohesion are calculated.Through the overall simulation scheme for finite element modeling,a complete finite element model of tobacco leaf beating process is established,and the numerical simulation of tobacco leaf beating process is completed.The extraction program of tobacco threshing process result file was written by Python,and the simulation results of experimental group and control group were extracted and studied.The reliability and accuracy of the model is confirmed by comparing and analyzing the extraction results.With reference to the discrete element simulation of tobacco threshing process,the finite element simulation of tobacco threshing process of the same conditions is set up,and the reliability of the simulation model is further verified by comparing the extracted results,and the influence of the threshing speed on the threshing quality is revealed.Studying tobacco threshing process by numerical simulation can not only improve the research efficiency of tobacco threshing process,but also have important reference value for quantitative analysis of the relationship between tobacco technological parameters and threshing quality.