We study crack propagation in rubberlike materials and show that the nonuniform temperature distribution which occurs in the vicinity of the crack tip has a profound influence on the crack propagation, and may strongly enhance the crack propagation energy G(v) for high crack velocities v. At very low crack-tip velocities, the heat produced at the crack tip can diffuse away, but already at moderate crack-tip velocities a very large temperature increase occurs close to the crack tip resulting in a "hot-crack" propagation regime. The transition between the low-speed regime and the hot-crack regime is very abrupt and may result in unstable crack motion, e.g., stick-slip motion or catastrophic failure.
|Titolo:||Hot cracks in rubber: Origin of the giant toughness of rubberlike materials|
|Data di pubblicazione:||2005|
|Digital Object Identifier (DOI):||10.1103/PhysRevLett.95.114301|
|Appare nelle tipologie:||1.1 Articolo in rivista|