3D打印仿贻贝足丝结构的黏附性能

徐万崟; 谢宇; 钱劲

doi:10.21656/1000-0887.440162

3D打印仿贻贝足丝结构的黏附性能

doi: 10.21656/1000-0887.440162

徐万崟^1,,
谢宇¹,
钱劲^{1, 2, ,}

1.
浙江大学航空航天学院工程力学系，杭州 310027
2.
浙江省软体机器人与智能器件研究重点实验室，杭州 310027

基金项目:

国家自然科学基金 12125205

国家自然科学基金 12072316

国家自然科学基金 12132014

浙江省重点研发计划 2021C01183

浙江省自然科学基金 LD22A020001

详细信息

作者简介:
徐万崟(1996—)，女，硕士生(E-mail：21924026@zju.edu.cn)

通讯作者:
钱劲(1978—)，男，教授，博士生导师(通讯作者. E-mail：jqian@zju.edu.cn)

中图分类号: O34; O39
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- 文章访问数: 408
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- PDF下载量: 49
- 被引次数: 0
出版历程
- 收稿日期: 2023-05-29
- 修回日期: 2023-07-31
- 刊出日期: 2024-03-01

Adhesive Performances of 3D Printed Biomimetic Mussel Byssal Structures

XU Wanyin^1
,,
XIE Yu¹,
QIAN Jin^{1, 2
, ,}

1.
Department of Engineering Mechanics, School of Aeronautics and Astronautics, Zhejiang University, Hangzhou 310027, P.R.China
2.
Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province, Hangzhou 310027, P.R.China

摘要

摘要: 贻贝足丝是一种自然界存在的高性能生物黏附器，能够在不同环境下提供贻贝-固体表面之间的黏附作用. 近年来，许多研究者开始关注贻贝足丝的组成和宏微观结构对其黏附性能的定量影响，为仿生黏附器件的设计寻找思路. 该文结合3D打印技术、脱黏实验和有限元方法，系统研究了形状和几何参数对仿贻贝足丝结构脱黏模式和黏附性能的影响机制. 该文结果揭示了贻贝足丝的脱黏机理，发现贻贝足丝存在最优的足丝方向角，使其黏附性能最佳，探究了同一角度下足丝线-斑块连接位置和斑块底部形状对其黏附性能的影响. 最后，模拟了束状仿贻贝足丝结构在竖直拉力作用下的完整脱黏过程，所获得的锯齿状脱黏曲线表明束状结构具有相对稳定的抗脱黏能力. 这些研究结果有助于理解自然界贻贝足丝的脱黏行为，可为仿生黏附器件的优化设计提供基础和参考.
- 贻贝足丝 /
- 仿生结构 /
- 结构因素 /
- 黏附性能 /
- 3D打印
Abstract: The mussel byssal is a high-performance biological device that provides adhesion between the mussels and solid surfaces in different environments. In recent years, researchers paid increasing attention to the quantitative effects of the composition and macro/microstructure of the mussel byssal on its adhesion performance, with insights for the design of biomimetic adhesive devices. Here, the 3D printing technique was combined with the detachment test and the finite element method to systematically investigate the effects of shapes and geometric parameters on the detachment modes and adhesive properties of biomimetic mussel byssal structures. The results reveal the detachment mechanism of the mussel byssal and show that, the mussel byssal has an optimal thread direction angle resulting in optimal adhesion. The effects of the thread-plaque junction position and the plaque bottom shape on adhesion properties were explored. Furthermore, the simulated complete detachment process of the bundle-like mussel byssal array under vertical traction, and the obtained sawtooth force-displacement curve indicates that, the bundle model has a relatively stable ability to resist detachment. These findings help understand the detachment behavior of the mussel byssal in nature and provide a theoretical guidance for the optimization design of biomimetic adhesive devices.
- mussel byssal /
- biomimetic structure /
- structural factor /
- adhesive performance /
- 3D printing

HTML全文

图 1 贻贝足丝的形态结构

Figure 1. The morphological structures of mussel byssal

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图 2 仿贻贝足丝结构的设计和制备

Figure 2. Design and preparation of the biomimetic mussel byssal structure

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图 3 加载角度可调的仿贻贝足丝结构试样脱黏实验

Figure 3. The detachment experiment of biomimetic mussel byssal samples with adjustable loading angles

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图 4 实验和模拟得到的结果

Figure 4. Results obtained from experiments and simulations

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图 5 实验得到的足丝方向角对黏附性能的影响

Figure 5. Effects of the thread direction angles on adhesive performances obtained from experiments

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图 6 不同方向角下模拟与实验的脱黏过程对比

Figure 6. Comparison between the detachment processes obtained from simulations and experiments for different direction angles

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图 7 不同方向角下模拟得到的脱黏力随相对连接位置的变化

Figure 7. Effects of the relative junction position on the detachment force obtained from simulations for different direction angles

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图 8 模拟得到的斑块底部形状对黏附性能的影响

Figure 8. Effects of the plaque bottom shape on adhesive performances obtained from simulations

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图 9 束状仿贻贝足丝结构模型的黏附性能

Figure 9. The adhesive performance of the model for bundle-like biomimetic mussel byssal structures

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表 1 有限元模拟所用的材料性质^[7]

Table 1. Material properties used in the finite element simulation^[7]

parameter	value
Young’s modulus of thread E_t/MPa	50
Young’s modulus of plaque E_p/MPa	2 600
stiffness of cohesive contact K/(MPa/mm)	5
maximum nominal stress of cohesive contact T/MPa	0.35
cohesive energy of cohesive contact G/(N/mm)	0.09

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