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Calibration and Test of Contact Parameters between Chopped Cotton Stalks Using Response Surface Methodology

Author

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  • Bingcheng Zhang

    (College of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832000, China)

  • Xuegeng Chen

    (College of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832000, China)

  • Rongqing Liang

    (College of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832000, China)

  • Xinzhong Wang

    (School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China)

  • Hewei Meng

    (College of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832000, China)

  • Za Kan

    (College of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832000, China)

Abstract

The accuracy of the material parameter settings directly affects the reliability of the results of the discrete element method simulation. It is necessary to calibrate the relevant parameters to obtain accurate discrete element simulation results when separating the cotton stalk particles from the residual film after crushing. The repose angle of the chopped cotton stalk particles was used as the response value to calibrate the contact parameters between particles. Physical tests measured the intrinsic particle and contact parameters between the cotton stalk particles and the contact material, which provided data for the simulation tests. According to the biological structure characteristics of cotton stalk, the discrete element method model of cotton stalk particles was constructed by bonding the elements of nonequal-diameter basic particles. Based on the response surface methodology, the stacking test of particles was simulated. The response model between the contact parameters and repose angle was established, and the effect law of the single-factor terms and interaction terms on the repose angle was analyzed. The optimal combination of contact parameters was obtained through the single-objective and multi-variable optimization methods. Finally, the contact parameter combination was verified by a simulation test of the repose angle. The results showed that the average relative error of the repose angle between the simulation test and the physical test was 1.04%, which verified the accuracy of the calibrated contact parameters and the reliability of the simulation test. These parameters provide a basis for the discrete element simulation study of cotton stalk motion in the separation process of cotton stalks and residual film and the subsequent gas–solid coupling simulation research.

Suggested Citation

  • Bingcheng Zhang & Xuegeng Chen & Rongqing Liang & Xinzhong Wang & Hewei Meng & Za Kan, 2022. "Calibration and Test of Contact Parameters between Chopped Cotton Stalks Using Response Surface Methodology," Agriculture, MDPI, vol. 12(11), pages 1-17, November.
  • Handle: RePEc:gam:jagris:v:12:y:2022:i:11:p:1851-:d:963615
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    References listed on IDEAS

    as
    1. Bingcheng Zhang & Rongqing Liang & Jiali Li & Yaping Li & Hewei Meng & Za Kan, 2022. "Test and Analysis on Friction Characteristics of Major Cotton Stalk Cultivars in Xinjiang," Agriculture, MDPI, vol. 12(7), pages 1-13, June.
    2. Weiquan Fang & Xinzhong Wang & Dianlei Han & Xuegeng Chen, 2022. "Review of Material Parameter Calibration Method," Agriculture, MDPI, vol. 12(5), pages 1-17, May.
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    Cited by:

    1. Deli Jiang & Xuegeng Chen & Limin Yan & Haixiao Gou & Jiacheng Yang & Ying Li, 2023. "Parameter Calibration of Discrete Element Model for Cotton Rootstalk–Soil Mixture at Harvest Stage in Xinjiang Cotton Field," Agriculture, MDPI, vol. 13(7), pages 1-17, July.

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