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- Title
Elastoplastic modelling of subsurface crack growth in rail/wheel contact problems.
- Authors
Lundén, R.
- Abstract
Propagation of small subsurface cracks subjected to shear under repeated rolling contact load is studied. An analytical crack model (Dugdale) with plastic strips at the two crack tips is employed. Compressive stresses promoting crack closure and friction between crack faces are considered. The triaxial stress state is used in the yield criterion. A damage criterion is suggested based on experimental LCF data. In a numerical study, critical crack lengths are found below which propagation of an existing crack should be effectively suppressed.
- Subjects
ELASTOPLASTICITY; KINEMATICS of machinery; MECHANICS (Physics); STRAINS &; stresses (Mechanics); STRENGTH of materials; ELASTICITY
- Publication
Fatigue & Fracture of Engineering Materials & Structures, 2007, Vol 30, Issue 10, p905
- ISSN
8756-758X
- Publication type
Article
- DOI
10.1111/j.1460-2695.2007.01160.x