DYNAMICALLY INDUCED FRACTURE
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.
- Prepared in cooperation with Utah University, Salt Lake City, Department of Mechanical Engineering. Also available in Journal of the Mechanics and Physics of Solids, V20, pp 203-222, 1972.
Northwestern University, EvanstonDepartment of Civil and Environmental Engineering, 2145 Sheridan Road
Evanston, IL United States 60208
- Nuismer Jr, R J
- Achenbach, J D
- Publication Date: 1971-6-25
- Pagination: 21 p.
- TRT Terms: Cracking; Dynamic loads; Fracture mechanics; Stresses
- Old TRIS Terms: Crack stresses
- Subject Areas: Marine Transportation; Materials;
- Accession Number: 00041750
- Record Type: Publication
- Source Agency: National Technical Information Service
- Contract Numbers: 00014-67A-0356-0014
- Files: TRIS
- Created Date: Mar 19 1973 12:00AM