On the adhesion between thin sheets and randomly rough surfaces

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Date
2022
Volume
8
Issue
Journal
Series Titel
Book Title
Publisher
Lausanne : Frontiers Media
Abstract

Thin, elastic sheets are well known to adapt to rough counterfaces, whereby adhesive interactions and pull-off stresses σp can be significant, yet no generally applicable, quantitative guideline has been suggested hitherto as to when a sheet should be considered thin enough to be sticky. Using computer simulations, we find that the dependence of σp on surface energy γ has a high and a low-pull-off-stress regime. For randomly rough surfaces, we locate the dividing line at the point, where γ is approximately half the elastic energy per unit area needed to make conformal contact, which is the same ratio as for semi-infinite elastic solids. This rule of thumb also applies to a certain degree for single-wavelength roughness, in which case the transition from low to high stickiness occurs when at the moment of maximum tension contact is not only broken at the height maxima but also at the saddle points.

Description
Keywords
adhesion, boundary element method, contact mechanics, thin sheet, traction
Citation
Wang , A., & Müser, M. H. (2022). On the adhesion between thin sheets and randomly rough surfaces. 8. https://doi.org//10.3389/fmech.2022.965584
License
CC BY 4.0 Unported