Abstract This paper presents issues of fatigue life calculations in operational load conditions. The assumed runs were so processed as to get a set of sinusoidal cycles by using the following methods: full cycles counting method and rainflow counting method. On the basis of such sets of cycles of the varying parameters $ S_{m i} $ and $ S_{a i} $ were prepared block load spectra of equivalent amplitudes $ S_{az} $ , obtained with the use of an original method of these authors, in which two-parameter fatigue characteristics were applied. The work resulted in comparison of fatigue life results for load spectra determined by using the assumed cycles counting methods and the assumed two-parameter fatigue characteristics: the model IM, model II, model III and model IV, respectively.


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    Title :

    Problems of Equivalent Load Amplitude in Fatigue Life Calculations


    Contributors:

    Published in:

    Publication date :

    2016




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    Unknown


    Classification :

    BKL:    55.40 Schiffstechnik, Schiffbau / 50.92 Meerestechnik



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