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Simulation Research on Cotton Stalk Cutting and Crushing Based on ANSYS/LS-DYNA and Field Experiments

Author

Listed:
  • Peng Wang

    (College of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832000, China
    Xinjiang Uygur Autonomous Region Research Institute of Measurement & Testing, Urumqi 830011, China)

  • Xuegeng Chen

    (College of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832000, China
    Key Laboratory of Northwest Agricultural Equipment, Ministry of Agriculture and Rural Affairs, Shihezi 832000, China)

  • Haojun Wen

    (College of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832000, China
    Key Laboratory of Northwest Agricultural Equipment, Ministry of Agriculture and Rural Affairs, Shihezi 832000, China)

Abstract

In order to solve the problem of high straw content in recovered residual film and the low rate of qualified straw crushing in combination with a front-mounted cotton-straw-crushing device, the cutting and crushing mechanisms of cotton stalks were studied based on ANSYS/LS-DYNA. The height h and dip angle α of the fixed blade were determined to be 30 mm and 75° through a finite element analysis. On the basis of the device design, explicit dynamic models of the cutting and crushing of a single cotton stalk were established based on ANSYS/LS-DYNA. The results of the dynamic analysis revealed the cutting mechanism of the cotton stalk, and the influences of the cutting edge angle γ and front baffle height h 1 on cotton stalk cutting were studied by using single-factor simulation tests. An edge angle of γ = 45° and a height of h 1 = 265 mm were determined. Meanwhile, the mechanism of cotton straw crushing was revealed, and the motion states of the straw were studied at different times. The results of the simulation experiments on the influence of the cutter shaft’s rotational speed showed that with an increase in the cutter shaft’s speed, the rate of qualified crushing and the removal rate were both increased. At the design speed of n = 1800 RPM, the rate of qualified crushing was 84.6%, and the removal rate was 95.1%. Then, field experiments were carried out. The test results were as follows: the stubble height was 8.0 cm, the rate of qualified straw crushing was 91.8%, the clearance rate of film-surface impurities was 92.3%, and the film content was 3.6%, which met the working quality requirements (not less than 85%) of NYT 500-2015: “Operating quality for straw-smashing machines”.

Suggested Citation

  • Peng Wang & Xuegeng Chen & Haojun Wen, 2023. "Simulation Research on Cotton Stalk Cutting and Crushing Based on ANSYS/LS-DYNA and Field Experiments," Agriculture, MDPI, vol. 13(6), pages 1-24, June.
    • Handle: RePEc:gam:jagris:v:13:y:2023:i:6:p:1268-:d:1174413
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    References listed on IDEAS

    as
    1. Silin Cao & Jianhua Xie & Hezheng Wang & Yuxin Yang & Yanhong Zhang & Jinbao Zhou & Shihua Wu, 2022. "Design and Operating Parameters Optimization of the Hook-and-Tooth Chain Rail Type Residual Film Picking Device," Agriculture, MDPI, vol. 12(10), pages 1-21, October.
    2. Peng Wang & Xuegeng Chen & Haojun Wen, 2022. "Research and Experiment on the Removal Mechanism of Light Impurities of the Residual Mulch Film Recovery Machine," Agriculture, MDPI, vol. 12(6), pages 1-16, May.
    3. Baoqing Chen & Jixiao Cui & Wenyi Dong & Changrong Yan, 2023. "Effects of Biodegradable Plastic Film on Carbon Footprint of Crop Production," Agriculture, MDPI, vol. 13(4), pages 1-9, March.
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