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- Title
The effect of T -stress on plane strain dynamic crack growth in elastic–plastic materials.
- Authors
JAYADEVAN, K. R.; NARASIMHAN, R.; RAMAMURTHY, T. S.; DATTAGURU, B.
- Abstract
ABSTRACT In this paper, the effects of T -stress on steady, dynamic crack growth in an elastic–plastic material are examined using a modified boundary layer formulation. The analyses are carried out under mode I, plane strain conditions by employing a special finite element procedure based on moving crack tip coordinates. The material is assumed to obey the J 2 flow theory of plasticity with isotropic power law hardening. The results show that the crack opening profile as well as the opening stress at a finite distance from the tip are strongly affected by the magnitude and sign of the T -stress at any given crack speed. Further, it is found that the fracture toughness predicted by the analyses enhances significantly with negative T -stress for both ductile and cleavage mode of crack growth.
- Subjects
STRAINS &; stresses (Mechanics); FRACTURE mechanics; ELASTOPLASTICITY
- Publication
Fatigue & Fracture of Engineering Materials & Structures, 2003, Vol 26, Issue 7, p647
- ISSN
8756-758X
- Publication type
Article
- DOI
10.1046/j.1460-2695.2003.00670.x