Constitutive representation of high-temperature creep damage
Journal Article
·
· Int. J. Plast.; (United States)
The elastic-viscoplastic constitutive equations of Bodner-Partom were applied to modeling creep damage in a high temperature Ni-alloy, B1900 + Hf. Both tertiary creep in bulk materials and creep crack growth in flawed materials were considered. In the latter case, the energy rate line integral was used for characterizing the crack driving force, and the rate of crack extension was computed using a local damage formulation that assumed fracture was controlled by cavitation occurring within the crack-tip process zone. The results of this investigation were used to assess the evolution equation for isotropic damage utilized in the Bodner-Partom constitutive equations. 25 references.
- Research Organization:
- Southwest Research Inst., San Antonio, TX (USA); Southwest Research Institute, San Antonio, TX (USA)
- OSTI ID:
- 6417740
- Journal Information:
- Int. J. Plast.; (United States), Vol. 4:4
- Country of Publication:
- United States
- Language:
- English
Similar Records
Constitutive modeling for isotropic materials (HOST). Annual Status Report
Inelastic response of a deep crack single-edge notch specimen under impact loading
Applications of elastic-viscoplastic constitutive models in dynamic analyses of crack run-arrest events
Technical Report
·
Thu Aug 01 00:00:00 EDT 1985
·
OSTI ID:6417740
+3 more
Inelastic response of a deep crack single-edge notch specimen under impact loading
Conference
·
Sat Dec 31 00:00:00 EST 1994
·
OSTI ID:6417740
Applications of elastic-viscoplastic constitutive models in dynamic analyses of crack run-arrest events
Conference
·
Wed Jan 01 00:00:00 EST 1986
·
OSTI ID:6417740