Cracks in flat plates are often found to be about 45° to the plate plane for some metals and alloys. There are two identical 45° directions to the plate plane and the choice of crack direction seems to be random. Experiments have shown that, for large flat panels, the long ductile crack propagation exhibits a regular alternating pattern, i.e. the crack switches to the other direction after propagates some distance regularly. In this paper, a numerical examination of the details of the formation of the alternating crack pattern is presented. Relevant material parameters and their influencing factors to the alternating behavior of cracks are discussed.

This content is only available via PDF.
You do not currently have access to this content.