Numerical Analysis of Friction-Filling Performance of Friction-Type Vertical Disc Precision Seed-Metering Device Based on EDEM

Yecheng Wang, Xueqi Kang, Guoqing Wang and Wenyi Ji ()
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Yecheng Wang: College of Engineering, Northeast Agricultural University, Harbin 150030, China
Xueqi Kang: College of Engineering, Northeast Agricultural University, Harbin 150030, China
Guoqing Wang: College of Engineering, Northeast Agricultural University, Harbin 150030, China
Wenyi Ji: College of Engineering, Northeast Agricultural University, Harbin 150030, China

Agriculture, 2023, vol. 13, issue 12, 1-17

Abstract: A seed-metering device is a key component for precision seeding and the core component of precision seed-metering devices. Nowadays, high-speed seeding is a trend in the development of seed-metering devices, but the filling performance of mechanical seed-metering devices decreases under the condition of high speed. Therefore, this paper explores a controllable method to improve the filling force of seeds, thereby increasing the limit operation speed of the existing mechanical seed-metering devices, so as to achieve high-speed seeding. The friction-filling method of friction vertical disc precision seed-metering devices was numerically simulated using the DEM. In this paper, the relationship between the relevant parameters and seed-filling force was confirmed via comparing theoretical formulas. The friction-filling method was studied via numerical simulation and experimental verification. This research demonstrated that during the process of friction filling, the pressure on the side wall of the tube increased with the e exponent with the change in the position of the particles. When the friction coefficient between the particles and the side wall is less than the friction coefficient between the particles, the e exponent increases. A surge occurs when the ratio of the square tube side length to the particle radius is n 3 + 2 ( n = 1 , 2 , 3 ) .

Keywords: DEM; model; friction filling (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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