In this paper a procedure is presented for the conceptual design of a crashworthy side structure of a LNG (liquefied natural gas) tanker. The crashworthiness of an LNG tanker is assessed taking into account the deformation restrictions of the containment system. A particle swarm algorithm is used for the structure optimisation. The classification society compliance of the conceptual design is checked for a characteristic service loading condition. Collision simulations are carried out with a non-linear finite element solver in order to assess crashworthiness. An element length-dependent constant strain failure criterion is used to model possible rupture. The resulting optimised conceptual side structure is compared with the initial rules-based concept and with a minimum weight concept, demonstrating the influence of the structural concepts and the containment system restrictions on the crashworthiness.


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    Title :

    An asessment procedure of the crashworthiness of an LNG tanker side structure


    Additional title:

    Ein Bewertungsverfahren für die Widerstandsfähigkeit des Schiffskörperseitenverbandes eines Flüssiggastankschiffes bei einer Kollision


    Contributors:

    Published in:

    Publication date :

    2010


    Size :

    12 Seiten, 17 Bilder, 5 Tabellen, 20 Quellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    An Assessment Procedure of the Crashworthiness of an LNG Tanker Side Structure

    Kõrgesaar, Mihkel / Ehlers, Sören | Taylor & Francis Verlag | 2010





    Side collisions and crashworthiness

    Friedel,B. | Automotive engineering | 1988