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On fatigue damage assessment in bimodal random processes

✍ Scribed by D. Benasciutti; R. Tovo

Publisher: Elsevier Science
Year: 2007
Tongue: English
Weight: 394 KB
Volume: 29
Category: Article
ISSN: 0142-1123
DOI: 10.1016/j.ijfatigue.2006.03.013

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✦ Synopsis

Rainflow fatigue damage in bimodal Gaussian processes is discussed. Some methods specifically developed for bimodal processes (e.g., single-moment, Jiao-Moan, Sakai-Okamura and Fu-Cebon method) are compared with the Tovo-Benasciutti method, a new approach valid for the broader class of wide-band processes. Further, an improvement of the Fu-Cebon method is also proposed. Numerically simulated bimodal random processes are used to compare the accuracies of all methods and to find the optimal range for their applicability. The single-moment, the modified Fu-Cebon and the Tovo-Benasciutti methods are seen as the most accurate over a wide combination of bimodal spectra.

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