Abstract
The mechanics of cohesive failure under mixed-mode loading is investigated for the case of a steadily propagating subsonic and intersonic dynamic crack subjected to a follower tensile and shear distributed load. The cohesive failure model chosen in this study is rate independent but accounts for the coupling between normal and tangential damage. Special emphasis is placed here on mixed-mode cases with predominantly shear loading. The analysis shows that the size of the mixed-mode cohesive zone is smaller than that obtained in the pure shear case. The relative extent of the shear and tensile cohesive damage zones depends on the crack speed and the mode mixity. In the intersonic regime, the failure process takes place exclusively in shear, even under remote mixed-mode loading conditions.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1547-1564 |
| Number of pages | 18 |
| Journal | Journal of the Mechanics and Physics of Solids |
| Volume | 50 |
| Issue number | 8 |
| DOIs | |
| State | Published - Aug 2002 |
Funding
Part of this work has been supported by the ASCI Center for the Simulation of Advanced Rockets funded by the US Department of Energy through the University of California under subcontract number B341494. Y.H. acknowledges the support from ONR (grant N00014-01-1-0205, program monitor Dr. Y.D.S. Rajapakse).
Keywords
- A. Dynamic fracture
- B. Elastic material
- C. Boundary integral equations
ASJC Scopus subject areas
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering