In addition to the traditional allowable stress criteria, fail-safe design based on the fracture mechanics is now pursued for ship hull structures. Application of the fracture mechanics analysis in actual design, however, has been difficult since it requires very tedious efforts of fine-mesh FEM analysis work to follow the crack propagation step by step. In order to make the fracture mechanics analysis readily applicable at design levels with efforts normally required in design for stress analysis, this paper proposes its simplified application procedure. The key point of this procedure is the estimation of the crack propagation path and K value from the stress analysis results on crackless model. The proposed crack path estimation criteria are based on the study of the relationship between the direction of principal stress in a flat plate as well as the K value when the crack reaches a normal crossing member and the crack propagation path. The proposal also includes simplified K value estimation methods by grouping actual forms of cracking into several typical patterns, so that the designer can estimate the K value for almost any type of structural members which he will face in his design.


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    Titel :

    A proposal of fracture control design procedure


    Weitere Titelangaben:

    Ein Vorschlag fuer ein Bemessungsverfahren fuer die Bruchsicherheit
    Titel japanisch


    Beteiligte:
    Kataza, T. (Autor:in) / Murata, S. (Autor:in) / Tateishi, M. (Autor:in) / Toyosada, M. (Autor:in) / Okamoto, T. (Autor:in) / Fujiwara, H. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    1981


    Format / Umfang :

    21 Seiten, 41 Bilder, 11 Tabellen, 21 Quellen


    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Japanisch





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