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Optimization and Accuracy Analysis of a Soil–Planter Model during the Sowing Period of Wheat after a Rice Stubble Based Discrete Element Method

Author

Listed:
  • Weiwen Luo

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

  • Xulei Chen

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

  • Kai Guo

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

  • Mingyang Qin

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

  • Feng Wu

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

  • Fengwei Gu

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

  • Zhichao Hu

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

Abstract

The soil during the sowing period of wheat after rice stubble cannot be accurately described by existing models and parameters with DEM because of its high moisture content and strong viscosity. The purpose of this study is to conduct an overall simulation of high-viscosity paddy soil and to analyze the accuracy of the model. Based on the results of an unconfined compression test and shear test, the range of bond parameters is preliminarily determined by a simulation test. Through the P-BD test and RSM test, the parameters with significant influence are determined to be normal stiffness per unit area ( S N ), shear stiffness per unit area ( S S ), and critical shear stress ( C S ), and an optimized combination of these parameters is obtained. Based on the optimized model, the error range and error generation mechanism of the model are analyzed under different operating parameters. The results show that the optimal parameter combination is S N of 1.07 × 10 7 N/m 3 , S S of 0.70 × 10 7 N/m 3 , and C S of 0.35 × 10 5 Pa, corresponding to a compression force of 120.1 N and a shear force of 7.70 N. With an increase in forward speed or seeding quantity or a decrease in rotary plowing speed, the model accuracy tends to increase, and the range of relative errors was found to be from 8.8% to 28.4%. The results can provide a research basis for the study of the motion state of seeds under soil. It can also further enrich parameter data of soil discrete element simulation models and provide a reference for related research studies.

Suggested Citation

  • Weiwen Luo & Xulei Chen & Kai Guo & Mingyang Qin & Feng Wu & Fengwei Gu & Zhichao Hu, 2023. "Optimization and Accuracy Analysis of a Soil–Planter Model during the Sowing Period of Wheat after a Rice Stubble Based Discrete Element Method," Agriculture, MDPI, vol. 13(10), pages 1-16, October.
    • Handle: RePEc:gam:jagris:v:13:y:2023:i:10:p:2036-:d:1265264
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    References listed on IDEAS

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    1. Kojo Atta Aikins & Mustafa Ucgul & James B. Barr & Emmanuel Awuah & Diogenes L. Antille & Troy A. Jensen & Jacky M. A. Desbiolles, 2023. "Review of Discrete Element Method Simulations of Soil Tillage and Furrow Opening," Agriculture, MDPI, vol. 13(3), pages 1-29, February.
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