高性能关节的仿生设计:甲虫股骨-胫骨关节不同结构导致的失效机制差异。

IF 3.4 3区 医学 Q1 ENGINEERING, MULTIDISCIPLINARY Biomimetics Pub Date : 2024-10-08 DOI:10.3390/biomimetics9100605
Jiandong Cui, Yubo Wang, Sen Lin, Zhiwei Tuo, Zhaohua Lin, Yunhong Liang, Luquan Ren
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引用次数: 0

摘要

甲虫的股胫关节可以承受很大的负荷,关节结构起着至关重要的作用。生活习性的不同会导致股胫节结构的差异,从而产生不同的力学性能。在此,我们测定了三种生活习性不同的甲虫的股胫关节结构特征。猩红甲虫科(Scarabaeidae)的Protaetia brevitarsis和甲壳虫科(Cetoniidae)的Torynorrhina fulvopilosa的胫骨在股骨两侧腰果状凸起的导轨中滑动,导轨由环形凸起和锥形凸起组成。Buprestidae Chrysodema radians 的股胫关节由锥形凸起的胫骨和圆形凹陷的股骨组成。根据股胫关节的结构特点,我们设计出了一种仿生结构。通过实验和有限元分析得出了不同关节模型失效的差异。实验结果表明,球形连接模型虽然能承受较低的载荷,但能保持结构的部分完整性,避免完全失效。立方体连接模型显示出较高的承载能力,但其失效模式为不可逆变形。作为可旋转机构的关键部件,仿生模型有望在高负荷工程领域得到广泛应用。
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Bionic Design of High-Performance Joints: Differences in Failure Mechanisms Caused by the Different Structures of Beetle Femur-Tibial Joints.

Beetle femur-tibial joints can bear large loads, and the joint structure plays a crucial role. Differences in living habits will lead to differences in femur-tibial joint structure, resulting in different mechanical properties. Here, we determined the structural characteristics of the femur-tibial joints of three species of beetles with different living habits. The tibia of Scarabaeidae Protaetia brevitarsis and Cetoniidae Torynorrhina fulvopilosa slide through cashew-shaped bumps on both sides of the femur in a guide rail consisting of a ring and a cone bump. The femur-tibial joint of Buprestidae Chrysodema radians is composed of a conical convex tibia and a circular concave femur. A bionic structure design was developed out based on the characteristics of the structure of the femur-tibial joints. Differences in the failure of different joint models were obtained through experiments and finite element analysis. The experimental results show that although the spherical connection model can bear low loads, it can maintain partial integrity of the structure and avoid complete failure. The cuboid connection model shows a higher load-bearing capacity, but its failure mode is irreversible deformation. As key parts of rotatable mechanisms, the bionic models have the potential for wide application in the high-load engineering field.

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来源期刊
Biomimetics
Biomimetics Biochemistry, Genetics and Molecular Biology-Biotechnology
CiteScore
3.50
自引率
11.10%
发文量
189
审稿时长
11 weeks
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