Crack and pull-off dynamics of adhesive, viscoelastic solids
Soft Condensed Matter
2022-05-04 v2
Abstract
When quickly detaching an elastomer from a counterface, viscoelasticity dramatically increases the perceived adhesion relative to its adiabatic or equilibrium value. Here, we report simulations on the sticking contact between a rigid cylinder and a viscoelastic half space revealing a maximum in the work of adhesion at intermediate pull-off velocities. Maximum tensile forces yet increase monotonically with the pull-off speed and the crack-tip speed in accordance with the Persson-Brener approach. As predicted theoretically, the fracture mode transitions from interfacial crack propagation to quasi-uniform bond breaking with increasing range of adhesion.
Cite
@article{arxiv.2108.02031,
title = {Crack and pull-off dynamics of adhesive, viscoelastic solids},
author = {Martin H. Müser and Bo N. J. Persson},
journal= {arXiv preprint arXiv:2108.02031},
year = {2022}
}