In this paper a procedure is presented for the conceptual design of a crashworthy side structure of a liquefied natural gas (LNG) 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 Assessment Procedure of the Crashworthiness of an LNG Tanker Side Structure


    Contributors:

    Published in:

    Ship Technology Research ; 57 , 2 ; 108-119


    Publication date :

    2010-04-01


    Size :

    12 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





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

    Körgesaar, Mihkel / Ehlers, Sören | Tema Archive | 2010




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