Preload-responsive adhesion of microfibre arrays to rough surfaces  

作　　者：Yuchen ZHANG Linghui HE 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, Chin)

机构地区：[1]Chinese Academy of Science (CAS) Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei 230026, China

出　　处：《Applied Mathematics and Mechanics(English Edition)》2017年第2期155-160,共6页应用数学和力学（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(No.11132009);the Collaborative Innovation Center of Suzhou Nano Science and Technology

摘　　要：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.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.

关 键 词：fibrillar adhesion rough surface PRELOAD pull-off force 

分 类 号：O343.3[理学—固体力学]