Abstract
Stresses and strains near a rapidly propagating crack tip are affected by the mass density of the material. This paper starts with a brief summary of analytical results for near-tip dynamic fields as predicted by linear elastic fracture mechanics. Next, exact expressions are derived for dynamic crack-line strains, for mode-II crack propagation in a nonlinear elastic material and in an elastic perfectly-plastic material. These expressions are valid on the crack line from the moving crack tip to the moving boundary with the region of linearly elastic deformation. For steady-state crack growth, a critical strain criterion is used to compute the relation between external load and crack tip speed. The required external load increases with crack-tip speed.
| Original language | English (US) |
|---|---|
| Title of host publication | Dyn Fract |
| Publisher | Martinus Nijhoff Publ |
| Pages | 215-227 |
| Number of pages | 13 |
| ISBN (Print) | 9024731798 |
| State | Published - 1985 |
| Externally published | Yes |
ASJC Scopus subject areas
- General Engineering