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Comparison of HCF life prediction methods based on different critical planes under multiaxial variable amplitude loading
Author(s) -
Wang C.,
Shang D.G.,
Wang X.W.,
Chen H.,
Liu J.Z.
Publication year - 2015
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/ffe.12234
Subject(s) - cycle count , materials science , structural engineering , amplitude , plane (geometry) , shear stress , shear (geology) , stress (linguistics) , aluminium alloy , aluminium , composite material , mathematics , engineering , geometry , physics , optics , linguistics , philosophy , operations research
High‐cycle fatigue life prediction methods based on different critical planes, including the maximum shear stress (MSS) plane, the weighted average shear stress plane and the Maximum Variance shear stress plane, are compared by two multiaxial cycle counting methods, i.e. the main and auxiliary channels (MAC) counting and the relative equivalent stress counting. A modified damage model is used to calculate the multiaxial fatigue damage. Compared with the experimental lives for 7075‐T651 aluminium alloy, the predicted results show that the MSS method together with MAC counting is suitable for the multiaxial fatigue life prediction.