In this paper, based on the irreversible thermodynamics and orthogonal flow rule, a microdamage evolution equation is first formulated, taking advantage of the specific free energy and plastic potential with internal variables. Furthermore, by analogy with the microdamage evolution equation, a macro
A damage model for ductile metals
β Scribed by D.J. Bammann; E.C. Aifantis
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 553 KB
- Volume
- 116
- Category
- Article
- ISSN
- 0029-5493
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
Although some damage models have been proposed for many years, the initiation of ductile macrocracks of metal under complicated stress states can not be appropriately predicted; the reason for this condition is that deformation in fact dissipating ductility of metal is not taken as the starting poin
Almtraet-A cohesive damage zone model of the Dugdale-Barenblatt type is presented to explore the effects of microscopic damage on a macroscopic crack in ductile materials. A semi-intinite macrocrack in a power-law plastic material under antiplane shear (mode III) is considered. The microscopic damag
## Abstract This paper introduces an elastic predictor/return mapping integration algorithm for a simplified version of the Lemaitre ductile damage model, whose return mapping stage requires the solution of only one scalar nonβlinear equation. The simplified damage model differs from its original c