黄金榕枝干物理力学特性参数研究

李俊平; 王悦; 贺平; 刘江; 张德晖; 郑文鑫; 何金成

doi:10.19998/j.cnki.2095-1795.2022.11.016

黄金榕枝干物理力学特性参数研究

doi: 10.19998/j.cnki.2095-1795.2022.11.016

李俊平^1,,
王悦¹,
贺平¹,
刘江¹,
张德晖^{1, 2,},
郑文鑫^{1, 2},
何金成^{1, 2}

1.
福建农林大学机电工程学院，福建福州 350002
2.
现代农业装备福建省高校工程研究中心，福建福州 350002

基金项目: 福建省自然科学基金项目（2018J01611）；福建省教育厅项目（63TZ16001）；福建省高峰高原学科项目（712018014）

详细信息

作者简介:
李俊平，硕士生，主要从事机电产品设计方法与实现研究　E-mail：958468425@qq.com

张德晖，通信作者，副教授，主要从事山地农业装备研究　E-mail：zzhangdehui@126.com

中图分类号: S224
计量
- 文章访问数: 32
- HTML全文浏览量: 6
- PDF下载量: 7
- 被引次数: 0
出版历程
- 收稿日期: 2022-08-05
- 修回日期: 2022-10-14
- 出版日期: 2022-11-20

Physical and Mechanical Property Parameters of Ficus microcarpa 'Golden Leaves'

LI Junping^1
,,
WANG Yue¹,
HE Ping¹,
LIU Jiang¹,
ZHANG Dehui^{1, 2
,},
ZHENG Wenxin^{1, 2},
HE Jincheng^{1, 2}

1.
College of Mechanical and Electrical Engineering，Fujian Agriculture and Forestry University，Fuzhou Fujian 350002，China
2.
Modern Agricultural Equipment Engineering Research Center of Fujian Universities，Fuzhou Fujian 350002，China

摘要

摘要:
为给黄金榕切割机构设计提供一定的理论依据及建立黄金榕有限元力学模型，需要研究黄金榕力学性能参数。以黄金榕枝干为试验材料，测量其含水率，并对其进行径向压缩、轴向压缩、三点抗弯和抗剪试验。结果表明：枝干稍部、上部和中部的径向平均抗压弹性模量依次为65.27、80.01和118.30 MPa；枝干轴向平均抗压弹性模量依次为20.64、22.78和26.72 MPa；枝干平均抗弯弹性模量依次为120.10、180.34和221.56 MPa；枝干中部最小抗剪强度为5.60 MPa，最大抗剪强度为16.95 MPa。研究发现，同一部位的枝干所能承受的最大载荷随含水率增加而减小，因此在设计绿篱机时可增设洒水装置，或在黄金榕具有一定湿度时进行修剪。
- 黄金榕 /
- 力学性能 /
- 抗剪强度 /
- 抗弯强度
Abstract:
In order to provide some theoretical basis for design of cutting mechanism of Ficus microcarpa 'Golden Leaves' and establish finite element mechanical model of Ficus microcarpa 'Golden Leaves', it is necessary to study mechanical properties of Ficus microcarpa 'Golden Leaves'．Ficus microcarpa 'Golden Leaves' was used as experimental material to measure its moisture content, and radial compression, axial compression, three-point bending and shear tests were carried out．Results showed that average radial compressive elastic modulus of treetop part, upper part and middle part were 65.27, 80.01 and 118.30 MPa, respectively．Average axial compressive elasticity modulus were 20.64, 22.78 and 26.72 MPa, respectively．Average flexural elasticity modulus were 120.10, 180.34 and 221.56 MPa, respectively．Minimum shear strength of middle part was 5.60 MPa and maximum was 16.95 MPa．It was found that the maximum load of branches in the same position decreased with increase of water content, so sprinklers could be added to design of hedgerows or pruned when there was a certain humidity of Ficus microcarpa 'Golden Leaves'．
- Ficus microcarpa 'Golden Leaves' /
- mechanical properties /
- shear strength /
- flexural strength

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图 1 试样截取部位示意

Figure 1. Schematic diagram of sample cutting site

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图 2 径向压缩示意

Figure 2. Schematic diagram of radial compression

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图 3 径向压缩试验

Figure 3. Radial compression test

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图 4 径向压缩破坏后试样

Figure 4. Specimen after radial compression

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图 5 轴向压缩示意

Figure 5. Schematic diagram of axial compression

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图 6 轴向压缩试验

Figure 6. Axial compression test

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图 7 轴向压缩破坏后试样

Figure 7. Specimen after axial compression failure

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图 8 3点抗弯试验

Figure 8. Three-point bending test

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图 9 3点弯曲破坏后试样

Figure 9. Specimen after three-point bending failure

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图 10 抗剪试验

Figure 10. Shear test

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图 11 剪切破坏后试样

Figure 11. Specimen after shear failure

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图 12 径向压缩试验载荷-位移曲线

Figure 12. Load-displacement curve of radial compression test

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图 13 枝干各部位径向压缩弹性模量

Figure 13. Radial compression elastic modulus of each branch

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图 14 轴向压缩试验载荷-位移曲线

Figure 14. Load-displacement curve of axial compression test

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图 15 枝干各部位轴向压缩弹性模量

Figure 15. Axial compression elastic modulus of each branch

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图 16 3点弯曲试验载荷-位移曲线

Figure 16. Load-displacement curve of three-point bending test

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图 17 枝干各部位抗弯弹性模量

Figure 17. Bending elastic modulus of each part of branch

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图 18 枝干各部位抗弯强度

Figure 18. Bending strength of each part of branch

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图 19 枝干中部抗剪试验载荷-位移曲线

Figure 19. Load-displacement curve of middle branch shear test

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