IMECH-IR  > 非线性力学国家重点实验室
Tunable Adhesion of a Bio-Inspired Micropillar Arrayed Surface Actuated by a Magnetic Field
Li, Xingji1,2; Peng, Zhilong3,4; Yang, Yazheng3,4; Chen, Shaohua3,4
Corresponding AuthorChen, Shaohua(chenshaohua72@hotmail.com)
Source PublicationJOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME
2019
Volume86Issue:1Pages:11
ISSN0021-8936
AbstractBio-inspired functional surfaces attract many research interests due to the promising applications. In this paper, tunable adhesion of a bio-inspired micropillar arrayed surface actuated by a magnetic field is investigated theoretically in order to disclose the mechanical mechanism of changeable adhesion and the influencing factors. Each polydimethylsiloxane (PDMS) micropillar reinforced by uniformly distributed magnetic particles is assumed to be a cantilever beam. The beam's large elastic deformation is obtained under an externally magnetic field. Specially, the rotation angle of the pillar's end is predicted, which shows an essential effect on the changeable adhesion of the micropillar arrayed surface. The larger the strength of the applied magnetic field, the larger the rotation angle of the pillar's end will be, yielding a decreasing adhesion force of the micropillar arrayed surface. The difference of adhesion force tuned by the applied magnetic field can be a few orders of magnitude, which leads to controllable adhesion of such a micropillar arrayed surface. Influences of each pillar's cross section shape, size, intervals between neighboring pillars, and the distribution pattern on the adhesion force are further analyzed. The theoretical predictions are qualitatively well consistent with the experimental measurements. The present theoretical results should be helpful not only for the understanding of mechanical mechanism of tunable adhesion of micropillar arrayed surface under a magnetic field but also for further precise and optimal design of such an adhesion-controllable bio-inspired surface in future practical applications.
Keywordmicropillar arrayed surface magnetic field tunable adhesion mechanical mechanism large elastic deformation
DOI10.1115/1.4041550
Indexed BySCI ; SCI
Language英语
WOS IDWOS:000469485600007
WOS KeywordBIOMIMETIC FIBRILLAR INTERFACES ; REVERSIBLE ADHESION ; GECKO ADHESION ; FRICTIONAL FORCES ; ASPECT RATIO ; MECHANICS ; CONTACT ; ATTACHMENT ; BIOMECHANICS ; DESIGN
WOS Research AreaMechanics
WOS SubjectMechanics
Funding ProjectBeijing Institute of Technology (The BIT Creative Research Plan) ; National Natural Science Foundation of China[11532013] ; National Natural Science Foundation of China[11672302] ; National Natural Science Foundation of China[11872114]
Funding OrganizationBeijing Institute of Technology (The BIT Creative Research Plan) ; National Natural Science Foundation of China
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/80712
Collection非线性力学国家重点实验室
Corresponding AuthorChen, Shaohua
Affiliation1.Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
3.Beijing Inst Technol, Inst Adv Struct Technol, Beijing 100081, Peoples R China
4.Beijing Inst Technol, Beijing Key Lab Lightweight Multifunct Composite, Beijing 100081, Peoples R China
Recommended Citation
GB/T 7714
Li, Xingji,Peng, Zhilong,Yang, Yazheng,et al. Tunable Adhesion of a Bio-Inspired Micropillar Arrayed Surface Actuated by a Magnetic Field[J]. JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME,2019,86(1):11.
APA Li, Xingji,Peng, Zhilong,Yang, Yazheng,&Chen, Shaohua.(2019).Tunable Adhesion of a Bio-Inspired Micropillar Arrayed Surface Actuated by a Magnetic Field.JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME,86(1),11.
MLA Li, Xingji,et al."Tunable Adhesion of a Bio-Inspired Micropillar Arrayed Surface Actuated by a Magnetic Field".JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME 86.1(2019):11.
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