title: Supersonic crack propagation in a class of lattice models of mode III brittle fracture.
abstract: We study a lattice model for mode III crack propagation in brittle materials in a stripe geometry at constant applied stretching. Stiffening of the material at large deformation produces supersonic crack propagation. For large stretching the propagation is guided by well-developed soliton waves. For low stretching, the crack-tip velocity has a universal dependence on stretching that can be obtained using a simple geometrical argument.
authors.affiliation: Centro Atómico Bariloche and Instituto Balseiro, Comisión Nacional de Energía Atómica, (8400) Bariloche, Argentina.
authors.forename: T M
authors.initials: TM
authors.lastname: Guozden
authors.forename: E A
authors.initials: EA
authors.lastname: Jagla