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Calibration of Discrete Element Model Parameters of Soil around Tubers during Potato Harvesting Period

Author

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  • Yuyao Li

    (Nanjing Institute of Agricultural Mechanization, Ministry of Agriculture and Rural Affairs, Nanjing 210014, China)

  • Jiali Fan

    (Nanjing Institute of Agricultural Mechanization, Ministry of Agriculture and Rural Affairs, Nanjing 210014, China)

  • Zhichao Hu

    (Nanjing Institute of Agricultural Mechanization, Ministry of Agriculture and Rural Affairs, Nanjing 210014, China)

  • Weiwen Luo

    (Nanjing Institute of Agricultural Mechanization, Ministry of Agriculture and Rural Affairs, Nanjing 210014, China)

  • Hongguang Yang

    (Nanjing Institute of Agricultural Mechanization, Ministry of Agriculture and Rural Affairs, Nanjing 210014, China)

  • Lili Shi

    (Nanjing Institute of Agricultural Mechanization, Ministry of Agriculture and Rural Affairs, Nanjing 210014, China)

  • Feng Wu

    (Graduate School of Chinese Academy of Agricultural Sciences, Beijing 100083, China)

Abstract

To address the fact that existing studies may not be able to accurately describe the discrete element parameters of the soil during the potato harvesting period and to improve the accuracy of the potato harvesting equipment simulation studies, this study was conducted on the soil around the harvested potato tubers in the field. The simulation parameters of the discrete element model of soil were determined by the soil stacking angle test and soil block shear crushing test with the actual test measurements as the target. Based on a series of experimental designs, the factors affecting the stacking angle were the static friction coefficient and the rolling friction coefficient between soil particles; and the rolling friction coefficient between soil and steel. The factors affecting the maximum shear damage force were normal stiffness and shear stiffness per unit area. The quadratic regression equations were established and solved to obtain the optimal discrete element simulation parameters. The results can provide more realistic and reliable parameters for the construction of soil simulation models of potato fields during harvesting and for the discrete element simulation of soil-touching components of potato harvesting equipment. It can also further enrich the parameter data of soil discrete element simulation models and provide a reference for related research

Suggested Citation

  • Yuyao Li & Jiali Fan & Zhichao Hu & Weiwen Luo & Hongguang Yang & Lili Shi & Feng Wu, 2022. "Calibration of Discrete Element Model Parameters of Soil around Tubers during Potato Harvesting Period," Agriculture, MDPI, vol. 12(9), pages 1-16, September.
  • Handle: RePEc:gam:jagris:v:12:y:2022:i:9:p:1475-:d:916273
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    References listed on IDEAS

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    1. Hongbo Zhao & Yuxiang Huang & Zhengdao Liu & Wenzheng Liu & Zhiqi Zheng, 2021. "Applications of Discrete Element Method in the Research of Agricultural Machinery: A Review," Agriculture, MDPI, vol. 11(5), pages 1-26, May.
    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. Hao Yuan & Shifei Liang & Jing Wang & Yikang Lu, 2022. "Numerical Simulation and Analysis of Vibrating Rice Filling Based on EDEM Software," Agriculture, MDPI, vol. 12(12), pages 1-18, November.

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