作者: M. SHARIYAT
DOI: 10.1111/J.1460-2695.2009.01381.X
关键词: Hydrostatic stress 、 Equivalent stress 、 Engineering 、 Structural engineering 、 Maxima and minima 、 Non proportional 、 New energy 、 Applied mathematics 、 Amplitude 、 Fatigue testing 、 Energy based
摘要: The prominent high cycle fatigue (HCF) criteria have been generally proposed based on definition of an equivalent stress that is mainly a modified version static failure criterion or yield function. One more effects including the mean normal and shear stresses, different phase shifts random frequencies components, relative instantaneous time variations locations extrema histories etc. not considered by many previously criteria. In present paper, amplitude concepts, three new energy-based HCF are to overcome mentioned shortcomings. A relevant life assessment algorithm results compared with as well experimental prepared author. To introduce comprehensive study, examined for components complicated geometries under proportional, non-proportional loadings. Results confirm efficiency accuracy Furthermore, it deduced Liu-Zenner type which include hydrostatic implicitly accurate than Papadopoulos-type consider explicitly.