Importance of Deviatoric Stress in Modeling Void Growth in Ductile Fracture
Conference
·
OSTI ID:759213
- Los Alamos National Laboratory
In this paper, the authors extend an upper bound result of Cocks [1989] to obtain a formula for porosity growth in ductile metals. Pressure and deviatoric stress are included. The matrix plasticity model involves the plastic strain rate as a power of the deviatoric stress, with a yield stress. The results show that the deviatoric stress cannot be neglected in calculating the porosity growth, even for high triaxialities.
- Research Organization:
- Los Alamos National Lab., NM (US)
- Sponsoring Organization:
- USDOE Office of Defense Programs (DP) (US)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 759213
- Report Number(s):
- LA-UR-98-4391
- Country of Publication:
- United States
- Language:
- English
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