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Calibration and Tests for the Discrete Element Simulation Parameters of Fallen Jujube Fruit

Author

Listed:
  • Gaokun Shi

    (College of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832000, China
    Xinjiang Production and Construction Corps, Key Laboratory of Modern Agricultural Machinery, Shihezi 832000, China)

  • Jingbin Li

    (College of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832000, China
    Xinjiang Production and Construction Corps, Key Laboratory of Modern Agricultural Machinery, Shihezi 832000, China)

  • Longpeng Ding

    (College of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832000, China
    Xinjiang Production and Construction Corps, Key Laboratory of Modern Agricultural Machinery, Shihezi 832000, China)

  • Zhiyuan Zhang

    (College of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832000, China
    Xinjiang Production and Construction Corps, Key Laboratory of Modern Agricultural Machinery, Shihezi 832000, China)

  • Huizhe Ding

    (College of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832000, China
    Xinjiang Production and Construction Corps, Key Laboratory of Modern Agricultural Machinery, Shihezi 832000, China)

  • Ning Li

    (College of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832000, China
    Xinjiang Production and Construction Corps, Key Laboratory of Modern Agricultural Machinery, Shihezi 832000, China)

  • Za Kan

    (College of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832000, China
    Xinjiang Production and Construction Corps, Key Laboratory of Modern Agricultural Machinery, Shihezi 832000, China)

Abstract

Discrete element method (DEM) simulation is an important method to analyze the interaction relationship between materials and equipment, and to develop machinery and/or equipment. However, it is necessary to input specific simulation parameters when establishing a DEM simulation model. In this study, the interval values were measured through angle of repose tests of fallen jujube fruit (FJF), and the simulation angle of repose tests for FJF were established with EDEM software (DEM Solutions Ltd. Edinburgh, Scotland, UK). Then, the Plackett-Burman design, steepest ascent search experiment, and center composite design experimental methods were utilized to obtain the specific values of the simulation parameters from the interval values. The results showed that significant influencing factors in the simulation angle of repose include the Poisson’s ratio, the static friction coefficient between FJF, and the static friction coefficient between FJF and the steel plate, for which the optimal values were 0.248, 0.480, and 0.309, respectively. The angle of repose tests’ results showed that the error was 0.53% between the simulation angle of repose (29.69°) and the angle of repose (29.85°). In addition, the flow rate test results showed that the average error was 5.84% between the physical and simulation tests. This indicated that the calibrated parameters were accurate and reliable, and that the simulation model can accurately represent the physical tests. Consequently, this study provides an EDEM model of FJF that was essential in designing machinery and equipment through the EDEM simulation method.

Suggested Citation

  • Gaokun Shi & Jingbin Li & Longpeng Ding & Zhiyuan Zhang & Huizhe Ding & Ning Li & Za Kan, 2021. "Calibration and Tests for the Discrete Element Simulation Parameters of Fallen Jujube Fruit," Agriculture, MDPI, vol. 12(1), pages 1-15, December.
  • Handle: RePEc:gam:jagris:v:12:y:2021:i:1:p:38-:d:714088
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