Abstract
The behaviour of edge cracks under Mode I loading in the SVC-Co material system is studied using the finite element method (FEM). This work focuses on ductile failure mechanisms in the Co binder. A micromechanical approach is taken whereby Co layers are modelled explicitly. An embedding technique is employed. Crystal plasticity theory and J(2) Bow theory are used to represent plastic deformation in Co ligaments. Areas of high hydrostatic stress, triaxiality and accumulated slip or effective plastic strain are identified within the binder material. The Gurson model is used to model crack growth in the Co ligaments. Fracture resistance curves are obtained giving a relationship between macroscopic material behaviour and microscopic failure mechanisms. Factors effecting the crack growth in single and multiple ligaments are identified.
| Original language | English (Ireland) |
|---|---|
| Number of pages | 10 |
| Journal | Fatigue & Fracture In Engineering Materials & Structures |
| Volume | 22 |
| Publication status | Published - 1 Jan 1999 |
Authors (Note for portal: view the doc link for the full list of authors)
- Authors
- Connolly, P.J. and McHugh, P.E.
- Connolly, P,McHugh, PE