Exactly solvable model for a velocity jump observed in crack propagation in viscoelastic solids.

ABSTRACT: Needs to impart appropriate elasticity and high toughness to viscoelastic polymer materials are ubiquitous in industries such as concerning automobiles and medical devices. One of the major problems to overcome for toughening is catastrophic failure linked to a velocity jump, i.e., a sharp transition in the velocity of crack propagation occurred in a narrow range of the applied load. However, its physical origin has remained an enigma despite previous studies over 60 years. Here, we propose an exactly solvable model that exhibits the velocity jump incorporating linear viscoelasticity with a cutoff length for a continuum description. With the exact solution, we elucidate the physical origin of the velocity jump: it emerges from a dynamic glass transition in the vicinity of the propagating c

SUBMITTER: Sakumichi N 

PROVIDER: S-EPMC5556105 | biostudies-literature | 2017 Aug

REPOSITORIES: biostudies-literature