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Tensile Properties and Fracture Mechanisms of Corn Bract for Corn Peeling Device Design

Author

Listed:
  • Zhenye Li

    (Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130025, China
    College of Biological and Agricultural Engineering, Jilin University, Changchun 130025, China)

  • Jun Fu

    (Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130025, China
    College of Biological and Agricultural Engineering, Jilin University, Changchun 130025, China)

  • Xiwen Luo

    (College of Biological and Agricultural Engineering, Jilin University, Changchun 130025, China
    College of Engineering, South China Agricultural University, Guangzhou 510642, China)

Abstract

This paper describes the physical and tensile properties of corn bracts during a whole harvest period by using two corn cultivars, aiming to realize efficient peeling with minimum energy performance and decrease the incidence of ear damage. The value range and change rule of tensile properties were obtained by combining mechanical experiments and numerical statistics. Meanwhile, mathematical models were established for tensile properties depending on bract moisture content and bract thickness. The experimental results show that the tensile properties of leaf blade were affected by the orientation between pulling force and longitudinal vein, and that parallel orientation was greater than perpendicular. Further, the tensile properties of leaf sheaths depended on the angle between pulling force and natural growth direction of the bract in the following order: 0° > 90° > 180°. A larger pulling force angle can improve the probability of bract fracturing at the root of leaf sheaths, which helps reduce bract residue on the peduncle. In addition, the fracture mechanisms of leaf blades and sheaths were expressed from physiological and morphological perspectives. The experimental results are believed to be able to provide theoretical guidance by which to design and optimize corn-peeling devices.

Suggested Citation

  • Zhenye Li & Jun Fu & Xiwen Luo, 2021. "Tensile Properties and Fracture Mechanisms of Corn Bract for Corn Peeling Device Design," Agriculture, MDPI, vol. 11(8), pages 1-16, August.
    • Handle: RePEc:gam:jagris:v:11:y:2021:i:8:p:796-:d:618301
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    Citations

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    Cited by:

    1. Ning Zhang & Jun Fu & Ruixue Wang & Zhi Chen & Qiankun Fu & Xuegeng Chen, 2022. "Experimental Study on the Particle Size and Weight Distribution of the Threshed Mixture in Corn Combine Harvester," Agriculture, MDPI, vol. 12(8), pages 1-20, August.
    2. Shun Chen & Xinwei Zhang & Chunxia Jiang & Kechuan Yi & Qingqing Wang & Xuemeng Sha & Xiaolong Zhang, 2023. "Experimental Study on the Peeling Fracture Effect of Fresh Corn Ear Based on High and Low Roller Peeling Equipment," Agriculture, MDPI, vol. 13(8), pages 1-16, August.

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