Journal of Jilin University(Engineering and Technology Edition) ›› 2018, Vol. 48 ›› Issue (5): 1537-1547.doi: 10.13229/j.cnki.jdxbgxb20170638

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Modeling method of maize kernels based on discrete element method

WANG Yang, WANG Xiao-mei, CHEN Ze-ren, YU Jian-qun   

  1. College of Biological and Agricultural Engineering, Jilin University, Changchun 130022, China
  • Received:2017-06-16 Online:2018-09-20 Published:2018-12-11

Abstract: The geometric shapes, size parameters and correlations between dimensions of more than ten maize varieties are measured and analyzed. On the basis of the analyses, a modeling method of a single maize kernel and a maize assembly is proposed based on the sphere filling method. Two maize varieties are selected as examples. By comparison of the experimental results and the Discrete Element Method (DEM) simulation results of the maize kernel packing tests and “elf-flow screening” tests, respectively, it is concluded that when the number of the filling spheres is 16 for a single maize kernel, a good agreement between them is reached. The effectiveness of the maize kernel modeling method proposed in this work is verified. A case is used to show how to employ the maize kernel model and DEM to analyze the discharge process of a silo.

Key words: agricultural engineering, discrete element method, maize kernel, particle modelling, simulation analysis, optimization design

CLC Number: 

  • S233.2
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