A fatigue evaluation due to an out-of-plane bending (OPB) and in-plane bending (IPB) moments has been a key engineering issue in the mooring design of a floating offshore unit. Choung and Han recently proposed a numerical approach to predict the fatigue damage which was dependent on the maximum principal stresses at final load step without using linearly superposed stresses at each load step for a hotspot. The proposed approach does not use the nominal OPB/IPB moments and the nominal OPB/IPB stresses therefrom, but it is important to compare them for verification of the proposed approach. Based on the mid-span elastic deflection, the nominal OPB/IPB moments are shown in this study. Since the elastic deflection-based nominal moment increased as the OPB tension angle develops, it was proven that the assumption of the elastic deflection was not suitable. By introducing BV guideline formulas, we show the OPB/IPB moments change along the OPB/IPB tension angles.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Study on prediction of stresses by out-of-plane and in-plane bending moments in offshore mooring chain


    Beteiligte:
    Choung, Joonmo (Autor:in) / Lee, Jae-bin (Autor:in)

    Erschienen in:

    Ships and Offshore Structures ; 13 , sup1 ; 98-112


    Erscheinungsdatum :

    30.04.2018


    Format / Umfang :

    15 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    In-plane and out-of-plane bending moments and local stresses in mooring chain links using machine learning technique

    Jae-bin Lee / Gökhan Tansel Tayyar / Joonmo Choung | DOAJ | 2021

    Freier Zugriff


    Rotor bending moments in plane of flapping

    Klemin, A. / Walling, W.C. / Wiesner, W. | Engineering Index Backfile | 1942


    Prediction of offshore mooring ropes

    Chaplin, C.R. | Tema Archiv | 1993


    Safe Life Prediction of Offshore Mooring Ropes

    Chaplin, C. R. / Marine Technology Society | British Library Conference Proceedings | 1993