Adhesive contact of rough brushes; Beilstein Journal of Nanotechnology; Vol. 9, iss. 1

Adhesive contact of rough brushes; Beilstein Journal of Nanotechnology; Vol. 9, iss. 1

Dettagli Bibliografici
Parent link:Beilstein Journal of Nanotechnology
Vol. 9, iss. 1.— 2018.— [P. 2405–2412]
Autore principale: Li Qiang
Ente Autore: Национальный исследовательский Томский политехнический университет Исследовательская школа химических и биомедицинских технологий (ИШХБМТ)
Altri autori: Popov V. L. Valentin Leonidovich
Riassunto:Title screen
The adhesive contact between a rough brush-like structure and an elastic half-space is numerically simulated using the fast Fourier transform (FFT)-based boundary element method and the mesh-dependent detachment criterion of Pohrt and Popov. The problem is of interest in light of the discussion of the role of contact splitting in the adhesion strength of gecko feet and structured biomimetic materials. For rigid brushes, the contact splitting does not enhance adhesion even if all pillars of the brush are positioned at the same height. Introducing statistical scatter of height leads to a further decrease of the maximum adhesive strength. At the same time, the pull-off force becomes dependent on the previously applied compression force and disappears completely at some critical roughness. For roughness with a subcritical value, the pressure dependence of the pull-off force qualitatively follows the known theory of Fuller and Tabor with moderate modification due to finite size effect of the brush.
Lingua:inglese
Pubblicazione: 2018
Soggetti:
электронный ресурс
труды учёных ТПУ
adhesion
brushes
contact splitting
pressure sensitive adhesion
roughness
адгезия
граничные элементы
сцепление
контакты
шероховатости
Accesso online:https://doi.org/10.3762/bjnano.9.225
Natura: MixedMaterials Elettronico Capitolo di libro
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=663927

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