Study of damping force between corn kernels and cobs based on DEM

2nd International Workshop on Materials Science and Mechanical Engineering

机械制造;材料科学

Yu, Y.J.^1 ; Yu, J.Q.^1 ; Zhang, M.J.^1

School of Biological and Agricultural Engineering, Jilin University, Changchun

130022, China^1

关键词: Corn kernels;    Damping forces;    Minimum value;    Quasi-static loading;    Threshing process;    Transverse compression;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/504/1/012082/pdf
DOI  :  10.1088/1757-899X/504/1/012082

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

To analyse the damping force between the kernel and the cob using DEM, the threshing properties were tested under quasi-static loading. And the effect of type of loading, variety of corn and moisture content was considered. The test results show that the type of loading and moisture content exerted a significant influence on the mechanical properties and the variety of corn had less significant effects. Under the same moisture content, the transverse compression and transverse tension damping force were significantly higher than the damping force by other two types of loading. And the damping force reached the minimum value at the moisture contents of 16.26%, and increased with increasing moisture content. According to the above test results, the corn threshing process was simulated and analyzed. The feasibility and effectiveness of the study on the damping force and coefficient are validated.