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| A study on dropping impact characteristics and damage regularity of potato tubers during harvest |
| FENG Bin1,2, SUN Wei1, SUN Bugong1, ZHANG Tao1, WU Jianmin1, SHI Linrong1 |
1.College of Mechanical and Electrical Engineering, Gansu Agricultural University, Lanzhou 730070, China;
2.Department of Automobile Engineering and Transportation, Lanzhou Vocational and Technical College, Lanzhou 730070, China |
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Abstract In order to reduce damages in potato mechanical harvest, there is a need to reveal the damage mechanism of potatoes’ tuber dropping impact.This article took “Gansu potato 7” as experimental material, and carried out a lot of experiments to study potato dropping impact under different factors and conditions.We studied the influence of the impact feature and the damage index of potatoes and analyzed the damage rules by testing the falling height, the collision material, the moisture content and the dropping directions of potatoes.Results show that the collision material, the falling height, and the moisture content have a significant impact on the collision characteristics, but the drop direction was insignificant; the maximum deformation and the damage index show significantly positive correlation, and the restitution coefficient and the damage index are significantly negative correlated, and a linear regression model for the restitution coefficient and the maximum deformation was obtained ,respectively.There is no correlation between the acceleration peak and the damage index.When the potato bumps with the collision materials, the linear correlation exists between the damage index and the falling height.The results of the study can be used to evaluate the collision damage of potatoes during harvest.
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Received: 14 December 2017
Published: 15 December 2019
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