Two new multiaxial criteria for high cycle fatigue computation

Two new high cycle multiaxial criteria are proposed on the basis of previous tests on other published criteria. One of the new criteria searches for a critical plane, while the second one integrates a fatigue parameter over all planes. The two criteria use a similar hybrid fatigue parameter, and these emphasize the effect of shear stress in comparison to normal stress. They both lead to a much better prediction than that achieved by other tested criteria. The experiments used for the comparisons were gathered from other published papers. There were a total of 119 experiments, so a statistical comparison of all results was necessary.