Home > Publications database > Crack and pull-off dynamics of adhesive, viscoelastic solids |
Journal Article | FZJ-2022-03896 |
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2022
EDP Sciences
Les Ulis
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Please use a persistent id in citations: http://hdl.handle.net/2128/32190 doi:10.1209/0295-5075/ac535c
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 separation 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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