An evaluation of multiaxial fatigue life assessment methods for engineering components

摘要: This article deals with the problem of multiaxial fatigue life assessment engineering components. General aspects critical plane damage models are discussed first. A computer-based procedure for incorporating models, suitable use in design evaluations components based on finite element analysis results, is presented and applied to correlate results from tests conducted SAE 1045 steel notched shaft specimens. From experimental data correlations, it found that second variant (in which planes defined as experiencing maximum damage) provides better estimates than first range strain) or conventional local strain prediction method, even simple short loading histories made up repeating cycles.