Effective macroscopic adhesive contact behavior induced by small surface roughness

Evaluation of energy dissipation involving adhesion hysteresis in spherical contact between a glass lens and a PDMS block

“…After the loading process completed, the unloading process was performed until the lens detached. A dependence of the maximum loading displacement on the adhesion hysteresis has been reported [16,20]. Hence, three different maximum loading displacement were chosen: −Z max = 10, 20, 30 μm, which is sufficiently smaller than the thickness of the PDMS block 10 mm.…”

“…The approximated value of 0.03 J/m 2 at the end of each step in the loading process is estimated to the work of adhesion Δγ. The initial contact of the first step is shown as a obtained in [20]. Notice that the rapidly changing area marked with (a) in Fig.…”

Effects of surface morphology, size effect and wettability on interfacial adhesion of carbon nanotube arrays

“…3, the indenter was initially positioned far at a distance of 160 nm, from the CNT surface such that no interaction occurred between the indenter tip and the MWCNT. This finding suggests that at the initial point of interaction, highly nonlinear contact occurred at multiple points on the CNT surface due to surface roughness effects [52][53][54]. As the indenter tip was pushed further into the CNT array, the force increased linearly until a turning point [step (b)] was the stress relaxation caused by deformationpromoted reactivity [55][56][57][58][59][60].…”

A Survey of Computational Models for Adhesion

“…During a loading cycle, a hysteresis then appears, and the energy enclosed by the loading cycle is usually dissipated. Due to surface roughness many such jumps can occur [127,128].…”

“…Further theoretical and numerical studies of rough surface adhesion can be found in [300,301,302,303,304,127,305,20] and [128].…”