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Optimizing the Design of Soil-Mixing Blade Structure Parameters Based on the Discrete Element Method

Author

Listed:
  • Huiling Ding

    (College of Agricultural Equipment Engineering, Henan University of Science and Technology, Luoyang 471003, China)

  • Qiaofeng Wang

    (College of Agricultural Equipment Engineering, Henan University of Science and Technology, Luoyang 471003, China)

  • Mengyang Wang

    (College of Agricultural Equipment Engineering, Henan University of Science and Technology, Luoyang 471003, China)

  • Chao Zhang

    (College of Agricultural Equipment Engineering, Henan University of Science and Technology, Luoyang 471003, China)

  • Han Lin

    (College of Agricultural Equipment Engineering, Henan University of Science and Technology, Luoyang 471003, China)

  • Xin Jin

    (College of Agricultural Equipment Engineering, Henan University of Science and Technology, Luoyang 471003, China)

  • Haizhou Hong

    (College of Agricultural Equipment Engineering, Henan University of Science and Technology, Luoyang 471003, China)

  • Fengkui Dang

    (College of Agricultural Equipment Engineering, Henan University of Science and Technology, Luoyang 471003, China)

Abstract

A multi-parameter optimization-based design method for soil-mixing blades was proposed to address the issue of excessive straw residue in the seeding layer after maize straw incorporation. A discrete element model simulating the interaction between the soil-mixing blades, soil, and corn straw was established. The key structural parameters included the bending line angle ( α ), bending angle ( β ), side angle ( δ ), tangential edge height ( h ), and bending radius ( r ); the straw burial rate ( Y 1 ) and straw percentage in the seeding layer ( Y 2 ) were selected as evaluation indicators. Single-factor experiments determined the significance level ( p < 0.05) and the parameter range. A Box–Behnken response surface design, combined with analysis of variance (ANOVA), was employed to elucidate the influence patterns of the structural parameters and their interactions regarding straw burial performance. Multi-objective optimization yielded an optimal parameter combination: α = 55°, β = 100.01°, δ = 130°, h = 40.05 mm, and r = 28.67 mm. The simulation results demonstrated that this configuration achieved a Y 1 of 96.04% and reduced Y 2 to 35.25%. Field validation tests recorded Y 1 and Y 2 values of 96.54% and 34.13%, respectively. This study quantitatively elucidated the relationship between soil-mixing blade parameters and straw spatial distribution, providing a theoretical foundation for optimizing straw incorporation equipment.

Suggested Citation

  • Huiling Ding & Qiaofeng Wang & Mengyang Wang & Chao Zhang & Han Lin & Xin Jin & Haizhou Hong & Fengkui Dang, 2025. "Optimizing the Design of Soil-Mixing Blade Structure Parameters Based on the Discrete Element Method," Agriculture, MDPI, vol. 15(14), pages 1-24, July.
    • Handle: RePEc:gam:jagris:v:15:y:2025:i:14:p:1558-:d:1706140
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    References listed on IDEAS

    as
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