| Simulation research on working parameters of threshing device on plot-bred wheat based on EDEM |
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| DOI：10.7606/j.issn.1000-7601.2016.04.44 |
| Key Words: plot-bred wheat threshing device discrete element software EDEM working parameters simulation test |
| Author Name | Affiliation | | LI Xing-kai | College of Engineering, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | HAN Zheng-sheng | College of Engineering, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | DAI Fei | College of Engineering, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | GAO Ai-min | College of Engineering, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | WEI Li-juan | College of Engineering, Gansu Agricultural University, Lanzhou, Gansu 730070, China |
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| Abstract: |
| In order to obtain the best threshing performance parameters of threshing device on plot-bred wheat, to reduce the grain retention in the device and to improve the reliability of breeding test data, the movement process of wheat grain and short stem mixed material was carried out using EDEM software by ignoring the broken threshing. Also, to optimize working parameters of the threshing device, and to further reduce the residual rate of grain in the threshing device closely, chronical variation regulation of velocity and displacement of single thrown grain, thrown stem and stranded grain were analysed. Meanwhile, the simulation test of material flow in the threshing device was carried out. The simulation results showed that when the drum speed was 1 600 r·min-1, the feeding quantity was 0.3 kg·s-1, and the threshing clearance was 8 mm, and the residual rate reached the minimum. In addition, verification by employing the optimal combination of the operational parameters for the threshing device indicated that the the simulation test and indoor test results were basically consistent. Therefore, the working parameters optimization for the threshing device using EDEM was feasible. It also provided a new method for the research and improved design of threshing device. |
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