Dynamic crack propagation under mixed-mode loading – Comparison between experiments and X-FEM simulations |
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Institution: | Laboratory of Mechanics and Solid Structures, LaMCoS, INSA-LYON, CNRS UMR5259, F69621 Villeurbanne, France |
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Abstract: | The objective of this paper is to describe a simple dynamic crack propagation experiment which reproduces two phenomena: mixed-mode propagation and crack stop and restart. This experiment is explained and interpreted using X-FEM simulations. We show that a simple fracture theory which consists in using a dynamic crack initiation toughness, a crack orientation along the maximum principal stress and a simple equation for the calculation of the crack speed is sufficient to explain what is observed experimentally. |
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