Computational Analysis of Charpy Impact Test Using Interface Elements

摘要

In order to analyze dynamic crack growth in the Charpy impact test accurately, a new computer simulation method using the interface element was developed and dynamic fracture behavior in the sharp and round V-notch Charpy tests of steel was analyzed using the proposed method. It was demonstrated that the Charpy test could be qualitatively simulated. In the case of the sharp notch Charpy test, the temperature effect on the dynamic crack propagation process was fond to be primarily attributed to the surface energy of the crack, not to the yield stress ratio, which represents the bulk property.