Dynamic Fracture of High Strength Steel.
Abstract
Ductile failure under a variety of loading conditions is examined in order to assess the importance of inertia, precompression and mean tensile stress on the failure process. A number of plastic instability concepts are also examined with regard to their ability to provide generality to failure criteria based on void nucleation and growth concepts. It was determined that inertia plays an importance role in localization and can dramatically inhibit the necking process. Precompression appears to be relatively unimportant, unless the material is very highly strain-rate sensitive. It was determined that a viable void volume fraction failure criteria can be established which is applicable over a wide range of impact conditions if the nucleation strains dependence on the mean tensile stress is incorporated in the theory. Keywords: Dynamic fracture; Fracture mechanics; Metal fatigue; Physical metallurgy.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1987
- Accession Number
- ADA178862
Entities
People
- Ian M. Fyfe
Organizations
- University of Washington