A cyclically pressurized hydraulic component made of compacted graphite iron (CGI) is examined in fatigue design. This CGI component has a notch, formed at the intersection of two drilling channels. This notch causes the stress to be locally elevated and may potentially serve as a fatigue initiation site. Traditional fatigue design approaches calculate the maximum stress/strain range acting at the notch and apply the Neuber correction when calculating fatigue life. It is, however, found that the fatigue life is dramatically underestimated by this method. This prompts the use of the critical distance method because the stresses are concentrated in a relatively small volume. When using the critical distance method, the fatigue life is correctly predicted. Finally, a fracture mechanics model of the crack check the reasonableness of the critical distance method results. The fracture mechanics model predicts that even if a crack were present, it would not propagate, which is consistent with the critical distance fatigue calculation.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    FEA-Based Fatigue Life Prediction of a Notched CGI Component


    Weitere Titelangaben:

    Sae Int. J. Engines


    Beteiligte:
    Calash, Antoun (Autor:in) / Cagney, John (Autor:in) / Lei, Xin (Autor:in)

    Kongress:

    Commercial Vehicle Engineering Congress ; 2011


    Erschienen in:

    Erscheinungsdatum :

    13.09.2011


    Format / Umfang :

    11 pages




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    FEA-Based Fatigue Life Prediction of a Notched CGI Component

    Lei, X. / Calash, A. / Cagney, J. et al. | British Library Conference Proceedings | 2011


    A New Method of Fatigue Life Prediction for Notched Specimen

    JIN Dan / GOU Zhifei | DOAJ | 2017

    Freier Zugriff

    Fatigue Tests of Un-Notched and Notched Specimens and Life Prediction Using a Variable Critical Distance Method

    Nienhuis, Michael D. / Carpenter, Neeraj / Jha, Pankaj et al. | SAE Technical Papers | 2019


    Fatigue Tests of Un-Notched and Notched Specimens and Life Prediction Using a Variable Critical Distance Method

    Carpenter, Neeraj / Jha, Pankaj / Ray, Sudipto et al. | British Library Conference Proceedings | 2019


    A Multiscale Fatigue Damage Prediction for Notched Composite Components

    Xiao, Jian / Fang, Xiujun E. / Lua, Jim et al. | AIAA | 2017