Graduate Research Student.
The effect of T-stress on plane strain dynamic crack growth in elastic–plastic materials
Article first published online: 19 JUN 2003
Fatigue & Fracture of Engineering Materials & Structures
Volume 26, Issue 7, pages 647–660, July 2003
How to Cite
JAYADEVAN, K. R., NARASIMHAN, R., RAMAMURTHY, T. S. and DATTAGURU, B. (2003), The effect of T-stress on plane strain dynamic crack growth in elastic–plastic materials. Fatigue & Fracture of Engineering Materials & Structures, 26: 647–660. doi: 10.1046/j.1460-2695.2003.00670.x
- Issue published online: 19 JUN 2003
- Article first published online: 19 JUN 2003
- Received in final form 18 December 2002
- dynamic crack growth;
- dynamic fracture toughness;
- elastic–plastic materials;
- finite elements;
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 J2 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.