Abstract
Expressions are presented for the stresses generated in the vicinity of a crack tip when a plane transient tension-stress wave, which is incident under an arbitrary angle, is diffracted by the crack. The effect of ductility effects on the combined Mode I and Mode II fractures is examined by assuming that yielding is restricted to a thin strip in the plane of the crack. Within this zone of yielding the normal stress in a certain defined direction is set equal to a yield stress of the material. It is shown that for a step-stress wave the leading edge of the zone of yielding initially moves at a constant speed, which is computed. The time for rupture at the trailing edge of the zone of yielding is also determined.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 203-222 |
| Number of pages | 20 |
| Journal | Journal of the Mechanics and Physics of Solids |
| Volume | 20 |
| Issue number | 4 |
| DOIs | |
| State | Published - Aug 1972 |
| Externally published | Yes |
Funding
The work of one of us (J. D. A.) was supportedb y the Office of Naval Researchu nder Contract ONR N 00014-67-A-0356-001w4it h NorthwesternU niversity.
ASJC Scopus subject areas
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering