An improved multiaxial high-cycle fatigue criterion based on critical plane approach

摘要

Several groups of fatigue damage parameters are discussed and then an improved multi-axial high-cycle fatigue criterion based on critical plane defined by the plane of maximum shear stress range is presented in this paper. A compromising solution to consider the mean normal stress acting on the critical plane is also proposed. The new fatigue criterion extends the range of metallic materials which is valid for the ratio 1.25 < f_(-1)/t_(-1) < 2. The predictions based on the presented model show a good agreement with test data.