Enhanced multiaxial fatigue criterion that considers stress gradient effects

Niels Saabye Ottosen, Matti Ristinmaa, Reijo Kouhia

    Tutkimustuotos: ArtikkeliScientificvertaisarvioitu

    24 Sitaatiot (Scopus)

    Abstrakti

    Modification of a fatigue criterion valid for homogeneous multiaxial stress states to account for the beneficial effect of stress gradients is traditionally performed by modifying the stress terms in the fatigue criterion and thereby introducing new parameters that need to be calibrated. Here the stress terms are left unchanged and, instead, the parameters in the fatigue criterion are modified. This modification is performed, in principle, along the lines of Siebel and Stieler and it introduces Neuber's parameter as the only new parameter; however, as soon as the ultimate strength of the material is known, also Neuber's parameter is known. Therefore, the methodology introduced implies that no new calibration process is needed. Here a specific fatigue criterion valid for homogeneous multiaxial stress states is enhanced by this procedure and predictions of this simple approach are compared with a broad range of experimental data and good accuracy is achieved. Moreover, the approach adopted can be applied to other fatigue criteria than the one considered here.

    AlkuperäiskieliEnglanti
    Sivut128-139
    Sivumäärä12
    JulkaisuInternational Journal of Fatigue
    Vuosikerta116
    DOI - pysyväislinkit
    TilaJulkaistu - 1 marrask. 2018
    OKM-julkaisutyyppiA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

    Julkaisufoorumi-taso

    • Jufo-taso 2

    !!ASJC Scopus subject areas

    • Modelling and Simulation
    • Yleinen materiaalitiede
    • Mechanics of Materials
    • Mechanical Engineering
    • Industrial and Manufacturing Engineering

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