On the Influence of Mean Shear Stress on Multiaxial High Cycle Fatigue of Metallic Materials

A study has been made of the influence a superimposed mean shear stress on capability some multiaxial high cycle fatigue criteria to predicting behavior 42CrMo4 and 34Cr4 alloy steels. Five selected critical plane-based criteria, namely Matake (M), Susmel & Lazzarin (S&L), Findley (F), Carpinteri Spagnoli (C&S) Liu Mahadevan (L&M), were applied number published experimental resistance limit tests, involving synchronous sinusoidal in-phase out-of-phase bending torsion. Applying same loading conditions mesoscopic scale-based criterion proposed by Papadopoulos (P), one could verify that predictive such an approach is almost invariably superior those associated with M, S&L, F, C&S L&M models. As independent stress, it seems appropriate conclude inclusion as parameter in models does, fact, exert negative their capability. Finally, worth mentioning that, except for Matake, S&L other exhibit dependence pure torsion respect disagreement well-established observations.