The Rotem failure criterion: theory and practice

In part A of the exercise, the failure criterion was presented and some failure envelopes were calculated on the basis of some materials properties that were supplied by the organizers. Here, in part B, some experimental results, also supplied by the organizers, are analyzed and compared with the theoretical predictions. In some cases, there is a large deviation between theory and practice. It is shown that the huge scatter in the experimental results and the arbitrary selection of some tests and material properties might be the reason for that. It is also suggested that, in some cases, a different mode of failure that is not covered by this criterion caused the failure.