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Dynamic Cutting Performance Test and Parameter Optimization of Longicorn Bionic Blade for Industrial Hemp Harvester

Author

Listed:
  • Kunpeng Tian

    (College of Mechanical and Electrical Engineering, Hohai University, Changzhou 213022, China
    Nanjing Institute of Agricultural Mechanization, Ministry of Agriculture and Rural Affairs, Nanjing 210014, China)

  • Bin Zhang

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

  • Cheng Shen

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

  • Haolu Liu

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

  • Jicheng Huang

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

  • Aimin Ji

    (College of Mechanical and Electrical Engineering, Hohai University, Changzhou 213022, China)

Abstract

In response to the unclear issue of whether the dynamic cutting performance and structural parameters of an industrial hemp blade, which was developed earlier based on the bionic prototype of the batocera horsfieldi, can be optimized in actual working conditions, this paper analyzes the effective clamping conditions of a reciprocating double-acting cutting blade for stalks and the cutting motion. To investigate the effect of different structural and motion parameters, as well as their interactions, of the bionic blade on cutting energy consumption, bionic blades with different combinations of tooth pitch and tooth angle were designed. A Box–Behnken response surface method with three factors and three levels was used to design an experimental scheme. Utilizing rigid-flexible coupling numerical simulation technology, numerical simulation experiments were conducted to investigate the cutting performance of industrial hemp stalks using the blade. A regression model for cutting energy consumption was established, and variance analysis indicated that tooth angle, speed ratio, and the interaction between tooth angle and speed ratio had an extremely significant effect on the regression model. The primary and secondary orders of factors affecting cutting energy consumption were determined to be: speed ratio > tooth angle > tooth pitch. Through optimization, the optimal parameter combination was found to be a blade tooth pitch of 6.61 mm, a tooth angle of 30°, and a speed ratio of 1.62. Under these conditions, the cutting energy consumption was 3947.99 mJ. The optimized parameters were verified through numerical simulation cutting experiments, and the results showed that the error compared with the optimization results was only 8.16%. This indicates that the optimization results have high credibility and further verifies the reliability of the model. This study can provide a reference for the development of cutting devices for industrial hemp harvesters and the selection of motion parameters.

Suggested Citation

  • Kunpeng Tian & Bin Zhang & Cheng Shen & Haolu Liu & Jicheng Huang & Aimin Ji, 2023. "Dynamic Cutting Performance Test and Parameter Optimization of Longicorn Bionic Blade for Industrial Hemp Harvester," Agriculture, MDPI, vol. 13(5), pages 1-13, May.
    • Handle: RePEc:gam:jagris:v:13:y:2023:i:5:p:1074-:d:1149392
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    References listed on IDEAS

    as
    1. Tao Wang & Zhengdao Liu & Xiaoli Yan & Guopeng Mi & Suyuan Liu & Kezhou Chen & Shilin Zhang & Xun Wang & Shuo Zhang & Xiaopeng Wu, 2022. "Finite Element Model Construction and Cutting Parameter Calibration of Wild Chrysanthemum Stem," Agriculture, MDPI, vol. 12(6), pages 1-12, June.
    2. Zhengdao Liu & Tao Wang & Suyuan Liu & Xiaoli Yan & Hongbo Zhao & Xiaopeng Wu & Shuo Zhang, 2023. "Design and Experimental Study of a Bionic Blade for Harvesting the Wild Chrysanthemum Stem," Agriculture, MDPI, vol. 13(1), pages 1-16, January.
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    Cited by:

    1. Kunpeng Tian & Jicheng Huang & Bin Zhang & Aimin Ji & Zhonghua Xu, 2024. "Study on the Impact of Cutting Platform Vibration on Stalk Cutting Quality in Industrial Hemp," Agriculture, MDPI, vol. 14(2), pages 1-15, February.

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