Abstract
This paper analyses the dynamic equations representing the peeling dynamics of an adhesive tape from a rotating support. Three degrees of freedom are considered. Speed jumps are shown to be possible and are then introduced into the dynamics by discontinuous operators. Differences with previous models are studied, with regard also to the eventuality of chaotic orbits. The observed metastability of the stationary branches is accounted in an early catastrophe model. An analogy between the sudden jumps of the crack speed and the abrupt phase transitions of a van der Waals’ fluid is developed with the aim of suggesting a possible statistical interpretation of fracture dynamics.
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