Preload-responsive adhesion of microfibre arrays to rough surfaces

doi:10.1007/s10483-017-2165-9

Applied Mathematics and Mechanics (English Edition) ›› 2017, Vol. 38 ›› Issue (2): 155-160.doi: https://doi.org/10.1007/s10483-017-2165-9

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Preload-responsive adhesion of microfibre arrays to rough surfaces

Yuchen ZHANG, Linghui HE

Chinese Academy of Science(CAS) Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei 230026, China

Received:2016-07-11 Revised:2016-08-13 Online:2017-02-01 Published:2017-02-01
Contact: Linghui HE E-mail:lhhe@ustc.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (No.11132009) and the Collaborative Innovation Center of Suzhou Nano Science and Technology

Abstract

Abstract:

Adhesion of bio-inspired microfibre arrays to a rough surface is studied theoretically. The array consists of vertical elastic rods fixed on a rigid backing layer, and the surface is modeled by rigid steps with a normally distributed height. Analytical expressions are obtained for the adhesion forces in both the approach and retraction processes. It is shown that, with the increasing preload, the pull-off force increases at first and then attains a plateau value. The results agree with the previous experiments and are expected helpful in adhesion control of the array in practical applications.

Key words: fibrillar adhesion, rough surface, pull-off force, preload

2010 MSC Number:

O343.3

Yuchen ZHANG, Linghui HE. Preload-responsive adhesion of microfibre arrays to rough surfaces. Applied Mathematics and Mechanics (English Edition), 2017, 38(2): 155-160.

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Preload-responsive adhesion of microfibre arrays to rough surfaces

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