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Shape of the power spectral density matrix components: Influence on fatigue damage
Author(s) -
Vantadori Sabrina,
Fortese Giovanni,
Carpinteri Andrea
Publication year - 2019
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.12975
Subject(s) - structural engineering , materials science , torsion (gastropod) , vibration fatigue , spectral density , shear (geology) , fatigue limit , shear stress , fatigue testing , tensor (intrinsic definition) , composite material , engineering , mathematics , geometry , medicine , telecommunications , surgery
The damage estimation for a structure under random loading is a challenge in fatigue assessment, especially when the loading is multiaxial. The comparison of the effect of different spectra on fatigue damage is essential when the structure can be subjected to different types of loadings. Therefore, in the present paper, the expected fatigue damage produced on metallic structures by combined bending and torsion stationary proportional and nonproportional loading is evaluated varying the shape of spectra of the normal and shear stress tensor components.