Fatigue Life Estimation Under Multiaxial Loading Based On The Spectral
Analysis Of Stochastic Processes
Author(s)
T. Łagoda, E. Macha & A. Niesłony
Abstract
Fatigue life estimation under multiaxial
loading based on the spectral analysis of
stochastic processes
T. Eagoda, E. Macha & A. Nieslony
Department of Mechanics and Machine Design,
Technical University of Opole, Poland
Abstract
The paper contains an algorithm for the estimation of fatigue life in HCF regimes
under multiaxial random loading using spectral methods. Loadings of Gaussian
distribution and narrow- and broadband frequency spectra were assumed.
Various characteristic states of multiaxial loading were considered. The reduced
stress history was determined with the use of failure criteria of multiaxial fatigue
based on the critical plane. For determination of the critical plane position the
methods of variance and damage accumulation were applied. During simulation,
the authors compared the results obtained by a spectral method in the frequency
domain with those from the rain-flow algorithm in the time domain. The paper
also contains the results of fatigue tests for 18G2A structural ste
Keywords
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