Parameter Calibration and Experimental Verification of the Discrete Element Model of the Edible Sunflower Seed

Xuefeng Zhu, Yang Xu, Changjie Han (), Binning Yang, Yan Luo, Shilong Qiu, Xiaona Huang and Hanping Mao
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Xuefeng Zhu: College of Mechanical and Electrical Engineering, Xinjiang Agricultural University, Urumqi 830052, China
Yang Xu: College of Mechanical and Electrical Engineering, Xinjiang Agricultural University, Urumqi 830052, China
Changjie Han: College of Mechanical and Electrical Engineering, Xinjiang Agricultural University, Urumqi 830052, China
Binning Yang: College of Mechanical and Electrical Engineering, Xinjiang Agricultural University, Urumqi 830052, China
Yan Luo: College of Mechanical and Electrical Engineering, Xinjiang Agricultural University, Urumqi 830052, China
Shilong Qiu: College of Mechanical and Electrical Engineering, Xinjiang Agricultural University, Urumqi 830052, China
Xiaona Huang: College of Mechanical and Electrical Engineering, Xinjiang Agricultural University, Urumqi 830052, China
Hanping Mao: College of Mechanical and Electrical Engineering, Xinjiang Agricultural University, Urumqi 830052, China

Agriculture, 2025, vol. 15, issue 3, 1-19

Abstract: A discrete element model of the edible sunflower seed was constructed, addressing the lack of an accurate model for edible sunflower seeds in the simulation process of seeding, cleaning, and transportation, and it was calibrated and verified through actual and simulation tests. Taking the edible sunflower seed as the research object, the range of its simulation parameter values was preliminarily determined through actual tests. Using the seed repose angle as the test index, the simulation parameters of the seed were calibrated through the Plackett—Burman test, the steepest climb test, and the Box–Behnken test. The suspension velocity of the seed model was determined by the Fluent–EDEM coupling simulation test, and the reliability of the discrete element model of the edible sunflower seed was verified. The simulated test results showed that the seed repose angle obtained by the optimization test was 35.823°, which exhibited a relative error of 0.103% in comparison to the average values obtained from the actual test. The simulated suspension velocity of the seed was 6.98 m/s. with a deviation of 0.55 m/s from the average suspension velocity obtained through the actual test. The discrete element model of the edible sunflower seed is accurate and reliable, offering guidance for improving the design of machinery used for seeding and harvesting edible sunflowers.

Keywords: edible sunflower seed; discrete element method; parameter calibration; suspension velocity (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: 2025
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