基于ANSYS的竹象虫头管仿生模型抗扭转分析

多层复合管在工程领域中应用广泛,但对其抗扭性质研究却较匮乏。为揭示竹象虫头管的抗扭转机理,该文利用电子扫描显微镜、X射线能谱仪和纳米压痕测试仪对竹象虫头管的内部结构、组成成分和纳米力学特性进行了分析。结果得出,竹象虫头管是由组织形貌、成分、力学性质各异的多种结构组成的多层中空复合管,其中外层主要为致密的几丁质,内层根据组织形貌又可分为轴向层和周向层,轴向层由片状脂类或糖类聚合物排列而成,周向层主要由纤维-蛋白基质排列而成,加强筋径向分布在管壁中,贯通多个轴向和周向层。其中,周向层的弹性模量、硬度和刚度最大。在头管结构研究的基础上,建立了仿生管模型,并采用ANSYS有限元软件对仿生管模型进行扭转...

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Bibliographic Details
Published in农业工程学报 Vol. 32; no. 12; pp. 11 - 16
Main Author 许顺 佟金 马云海 李默
Format Journal Article
LanguageChinese
Published 吉林大学生物与农业工程学院/吉林大学工程仿生教育部重点实验室,长春,130025 2016
Subjects
仿生
多层复合管
扭矩
有限元法
模型
竹象虫
扭矩
models
finite element method
bamboo weevil
模型
torque
仿生
竹象虫
bionics
有限元法
多层复合管
multilayer pipe
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ISSN1002-6819
DOI10.11975/j.issn.1002-6819.2016.12.002

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Summary:多层复合管在工程领域中应用广泛,但对其抗扭性质研究却较匮乏。为揭示竹象虫头管的抗扭转机理,该文利用电子扫描显微镜、X射线能谱仪和纳米压痕测试仪对竹象虫头管的内部结构、组成成分和纳米力学特性进行了分析。结果得出,竹象虫头管是由组织形貌、成分、力学性质各异的多种结构组成的多层中空复合管,其中外层主要为致密的几丁质,内层根据组织形貌又可分为轴向层和周向层,轴向层由片状脂类或糖类聚合物排列而成,周向层主要由纤维-蛋白基质排列而成,加强筋径向分布在管壁中,贯通多个轴向和周向层。其中,周向层的弹性模量、硬度和刚度最大。在头管结构研究的基础上,建立了仿生管模型,并采用ANSYS有限元软件对仿生管模型进行扭转分析,揭示了竹象虫头管多层排列的合理性。同时优化结果表明,提高内层材料的弹性模量,可以增加多层复合管的抗扭能力。该研究可为多层复合管抗扭转能力的增强设计提供参考。
Bibliography:11-2047/S
Multi-layered composite cylindrical pipes have been widely used in pipeline transportation engineering field because of its high corrosion resistance and good wearing resistance. However, there is still a lack of theoretic analysis on torsion. The bamboo weevil（Cyrtotrachelus bugueti Guer） lives on bamboo shoots. Its rostrum bears big torque while drilling into bamboo. To reveal the torque-bearing mechanisms of rostrum, in this study, the detailed geometric structural parameters, composite elements and nano-mechanical properties of rostrum were respectively analyzed by electron scanning microscope, X-ray energy spectrometer and nanoindenter. The electronic microscope photographs showed that bamboo weevil rostrum was a hollow pipe mainly composed of 3 parts, i.e. outer layer, inner layers and reinforcing ribs. And the inner layers could be divided into axial layers and circumferential layers based on their morphology. The reinforcing ribs perforated several axial layers and circumferential layers alon
ISSN:1002-6819
DOI:10.11975/j.issn.1002-6819.2016.12.002