Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
767872 | Engineering Fracture Mechanics | 2010 | 11 Pages |
Abstract
In this paper we first obtain the order of stress singularity for a dynamically propagating self-affine fractal crack. We then show that there is always an upper bound to roughness, i.e. a propagating fractal crack reaches a terminal roughness. We then study the phenomenon of reaching a terminal velocity. Assuming that propagation of a fractal crack is discrete, we predict its terminal velocity using an asymptotic energy balance argument. In particular, we show that the limiting crack speed is a material-dependent fraction of the corresponding Rayleigh wave speed.
Related Topics
Physical Sciences and Engineering
Engineering
Mechanical Engineering
Authors
Arash Yavari, Hamed Khezrzadeh,