Fatigue damage assessment in wide-band uniaxial random loadings by PSD decomposition: outcomes from recent research

Abstract Spectral decomposition of a PSD into narrow frequency bands has been suggested as a promising way for estimating the fatigue damage of uniaxial wide-band random loadings. The basic idea has been formulated in some recent publications, which also proposed different combination rules to sum up the damage of each narrow frequency band. The purpose of this technical note is to clarify the analogies, relationships and differences among the approaches developed in such publications.

[1]  E. W. C. Wilkins,et al.  Cumulative damage in fatigue , 1956 .

[2]  Denis Benasciutti,et al.  Recent developments in frequency domain multi-axial fatigue analysis , 2016 .

[3]  Roberto Tovo,et al.  Comparison of spectral methods for fatigue analysis of broad-band Gaussian random processes , 2006 .

[4]  Roberto Tovo,et al.  A stress invariant based spectral method to estimate fatigue life under multiaxial random loading , 2011 .

[5]  Claudio Braccesi,et al.  Random fatigue. A new frequency domain criterion for the damage evaluation of mechanical components , 2015 .

[6]  Roberto Tovo,et al.  Analogies between spectral methods and multiaxial criteria in fatigue damage evaluation , 2013 .

[7]  Curtis E. Larsen,et al.  Improved Spectral Method for Variable Amplitude Fatigue Prediction , 1990 .

[8]  Adam Niesłony,et al.  Spectral Method in Multiaxial Random Fatigue , 2007 .

[9]  Shahram Sarkani,et al.  Random Vibrations: Analysis of Structural and Mechanical Systems , 2003 .

[10]  Denis Benasciutti.  Fatigue analysis of random loadings: A frequency-domain approach , 2012 .

[11]  Claudio Braccesi,et al.  An innovative modal approach for frequency domain stress recovery and fatigue damage evaluation , 2016 .

[12]  Denis Benasciutti,et al.  “Projection-by-Projection” Approach: A Spectral Method for Multiaxial Random Fatigue , 2014 .

[13]  Curtis E. Larsen,et al.  Predicting the fatigue life of offshore structures by the single-moment spectral method , 1991 .

[14]  Claudio Braccesi,et al.  Fatigue behaviour analysis of mechanical components subject to random bimodal stress process: frequency domain approach , 2005 .