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arXiv · 2108.02031

Crack and pull-off dynamics of adhesive, viscoelastic solids

Martin H. Müser·Bo N. J. Persson
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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.

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Martin H. Müser, Bo N. J. Persson. 2021-08-04. Crack and pull-off dynamics of adhesive, viscoelastic solids. https://doi.org/10.1209/0295-5075%2Fac535c

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