Described are some structural aspects of a finite element model used in the design stage to predict vibration levels of a 150,000 SHP triple screw, high speed trailership. The mode shapes of the model show that at blade frequencies of operating RPM the hull does not vibrate as a beam in bending, shearing and twisting, but rather the decks and double bottom move with different wave lengths, amplitudes and phases. Hull flexibility can significantly affect the transverse vibration frequencies of propulsion shafts. The response of the model shows the importance of detuning of propulsion system resonant frequencies from operating RPM. The proper use of the finite element method in the calculation of propulsion system longitudinal vibration is suggested.


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    Titel :

    Prediction of propeller induced ship vibration: some structural aspects1


    Beteiligte:

    Erschienen in:

    Erscheinungsdatum :

    01.05.1978


    Format / Umfang :

    11 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Schlagwörter :


    Some aspects of ship and propeller experiments

    Robb, A.M. | Engineering Index Backfile | 1956


    Some aspects of propeller excited vibration

    Lamplough, T. A. | TIBKAT | 1965


    Application of NASTRAN to propeller-induced ship vibration

    Liepins, A. A. / Conaway, J. H. | NTRS | 1975


    Proceedings of the Symposium on Propeller Induced Ship Vibration

    Royal Institution of Naval Architects | TIBKAT | 1979


    SHIP PROPELLER MOUNTING BRACKET, SHIP PROPELLER AND SHIP

    WANG QIANG / TAO SHIZHENG / WAN XIAOKANG | Europäisches Patentamt | 2023

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