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In this paper, the stress intensity factors (SIFs) around a 3D semi-elliptical squat on a rail surface are investigated. Elastic foundation and water trapped inside the crack are considered as key factors in crack propagation. It is found that the opening mode and shear modes show different behavior compared with former models. Also the lateral load can change the SIF pattern significantly. The superposition...
Subsurface cracking in a homogeneous half-space due to a moving asperity is analyzed using linear elastic fracture mechanics and finite element simulations. Overlapping of the crack faces and assumptions about the surface traction distribution are avoided with the use of contact elements. Emphasis is given to the direction and the rate of crack propagation due to indentation and sliding contact. The...
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