IDEAS home Printed from https://ideas.repec.org/a/gam/jagris/v14y2024i12p2220-d1537170.html
   My bibliography  Save this article

Biomechanical Analysis of Camellia oleifera Branches for Optimized Vibratory Harvesting

Author

Listed:
  • Rui Pan

    (College of Mechanical and Electrical Engineering, Hunan Agricultural University, Changsha 410128, China)

  • Ziping Wan

    (College of Mechanical and Electrical Engineering, Hunan Agricultural University, Changsha 410128, China
    Specialty Oil Crop ( Camellia oleifera ) Full Mechanization Research Center, Changsha 410128, China)

  • Mingliang Wu

    (College of Mechanical and Electrical Engineering, Hunan Agricultural University, Changsha 410128, China
    Specialty Oil Crop ( Camellia oleifera ) Full Mechanization Research Center, Changsha 410128, China)

  • Shikui Lu

    (Hunan Large-Fruited Camellia oleifera Varieties Research Institute Co., Changsha 410203, China)

  • Lewei Tang

    (College of Mechanical and Electrical Engineering, Hunan Agricultural University, Changsha 410128, China
    Specialty Oil Crop ( Camellia oleifera ) Full Mechanization Research Center, Changsha 410128, China)

Abstract

To investigate the biomechanical properties of Camellia oleifera branches under two loading speeds within a specific diameter range, three-point bending tests were conducted using a universal material–testing machine. The tests were performed at loading speeds of 10 mm/min and 20 mm/min on branches with diameters ranging from 5 mm to 40 mm. This study aims to provide insights into the design of a manipulator gripper used in a vibrating harvester for Camellia oleifera fruit. Four main varieties of Camellia oleifera were tested to determine their elastic modulus. The nonlinear least squares method, based on the hyperbolic tangent function, was employed to fit the bending load–deflection curves of the branches. This process constructed multi-parameter transcendental equations involving elastic modulus, diameter, and loading speed. Results indicated that the branches of four Camellia oleifera varieties exhibited significant differences in their biomechanical properties, with their modulus of elasticity ranging from 459.01 MPa to 983.33 MPa. This suggests variability in the bending performance among different varieties. For instance, Huaxin branches demonstrated the highest rigidity, while Huashuo branches were softer in general. For the proposed empirical fitting equations, when the fitting parameter k is 168 ± 20 and the parameter c is 3.102 ± 0.421, the bending load–deflection relationship of the branches can be predicted more accurately. This study provides a theoretical basis for enhancing the efficiency of mechanized vibratory picking of Camellia oleifera and optimising the design of the gripper.

Suggested Citation

  • Rui Pan & Ziping Wan & Mingliang Wu & Shikui Lu & Lewei Tang, 2024. "Biomechanical Analysis of Camellia oleifera Branches for Optimized Vibratory Harvesting," Agriculture, MDPI, vol. 14(12), pages 1-26, December.
  • Handle: RePEc:gam:jagris:v:14:y:2024:i:12:p:2220-:d:1537170
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/2077-0472/14/12/2220/pdf
    Download Restriction: no

    File URL: https://www.mdpi.com/2077-0472/14/12/2220/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Delin Wu & Enlong Zhao & Dong Fang & Shan Jiang & Cheng Wu & Weiwei Wang & Rongyan Wang, 2022. "Determination of Vibration Picking Parameters of Camellia oleifera Fruit Based on Acceleration and Strain Response of Branches," Agriculture, MDPI, vol. 12(8), pages 1-18, August.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Yanchun Yao & Xiaoke Li & Zihan Yang & Liang Li & Duanyang Geng & Peng Huang & Yongsheng Li & Zhenghe Song, 2022. "Vibration Characteristics of Corn Combine Harvester with the Time-Varying Mass System under Non-Stationary Random Vibration," Agriculture, MDPI, vol. 12(11), pages 1-16, November.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jagris:v:14:y:2024:i:12:p:2220-:d:1537170. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.