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Input mobility of ship structures

Lin, Tian Ran & Mechefske, Chris K. (2008) Input mobility of ship structures. In Mahendran, Mahen (Ed.) 5th International Conference on Thin-walled Structures : ICTWS 2008 Innovations in Thin-walled Structures, 18-20 June 2008, Brisbane.

Abstract

This paper studies the fundamental features and the control mechanism of input mobilities of a complex ship structure by utilizing the well-established finite element analysis method. It is shown that the input mobility of a ship structure due to out-of-plane force and bending moment excitations at the engine mount locations is controlled by the bending stiffness of engine supports. The frequency averaged input mobility can be represented by that of the corresponding infinite beam. The input mobility due to an in-plane force excitation is bounded by those of the corresponding finite and infinite beams. The torsional moment input mobility can be predicted by the input mobility of the source engine bed section bounded by two consecutive ring frames attributed to the comparatively large in-plane stiffness of the ring frames. It is illustrated that the frequency averaged ship structural response is almost unaffected by neglecting the ship hull and deck plates in the analysis

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513 since deposited on 24 Jun 2008
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ID Code: 13864
Item Type: Conference Paper
Additional URLs:
Keywords: Input mobility, Vibration, Ship structure
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MECHANICAL ENGINEERING (091300) > Mechanical Engineering not elsewhere classified (091399)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MARITIME ENGINEERING (091100) > Marine Engineering (091101)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MARITIME ENGINEERING (091100) > Ship and Platform Structures (091105)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Copyright Owner: Copyright 2008 (please consult author)
Deposited On: 24 Jun 2008
Last Modified: 29 Feb 2012 23:43

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