Study of three-dimensional crack fronts under plane stress using a phase field model
Physique de la Matière Condensée, École Polytechnique, CNRS - 91128 Palaiseau Cedex, France, EU
Accepted: 28 October 2010
The shape of a crack front propagating through a thin sample is studied using a phase field model. The model is shown to have a well-defined sharp interface limit. The crack front is found to be an ellipse with large axis equal to the width of the sample and small axis being a function of the Poisson ratio and of the width of the sample. Numerical results also indicate that the front shape is independent of the crack speed and of the sample extension perpendicular to its width.
PACS: 62.20.mm – Fracture / 46.15.-x – Computational methods in continuum mechanics / 62.20.mt – Cracks
© EPLA, 2010