On the adhesion between thin sheets and randomly rough surfaces
- Thin, elastic sheets are well known to adapt to rough counterfaces, whereby adhesive interactions and pull-off stresses σ<sub>p</sub> 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 σ<sub>p</sub> 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.
| Document Type: | Article |
|---|---|
| Author: | Anle WangORCiD, Martin MüserORCiD |
| URN: | urn:nbn:de:bsz:291:415-1314 |
| DOI: | https://doi.org/10.3389/fmech.2022.965584 |
| Parent Title (English): | Frontiers in Mechanical Engineering |
| Volume: | 8 |
| First Page: | 965584 |
| Language: | English |
| Year of first Publication: | 2022 |
| Release Date: | 2022/08/19 |
| Tag: | adhesion; boundry element method; contact mechanics; thin sheet; traction |
| Impact: | 02.30 (2022) |
| Funding Information: | Leibniz Gemeinschaft |
| Scientific Units: | Fellow |
| DDC classes: | 500 Naturwissenschaften und Mathematik / 530 Physik |
| Open Access: | Open Access |
| Signature: | INM 2022/076 |
| Licence (German): |  Creative Commons - CC BY - Namensnennung 4.0 International |
