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Ultimate strength characteristics of aluminium plates for high speed vessels

Lookup NU author(s): Dr Simon Benson, Dr Jonathan Downes, Professor Bob Dow



Marine grade aluminium alloy has become an established structural material for medium to high speed commercial craft and has also been used as the primary hull material for several naval vessels including a 127 in trimaran, The analysis of large high speed craft operating in deep ocean and potentially hostile environments will require rigorous methodologies to evaluate the ultimate strength of the bull girder. This paper examines the strength of plate elements with a range of geometric, imperfection and material parameters typical of a high speed vessel using a non linear finite element approach. Representative plate load shortening curves arc required in simplified hull girder ultimate strength methodologies; for the case of a high speed aluminium vessel the curves need to account for the effects of parameters including alloy type, imperfection, softening in the heat affected zone, residual stresses, lateral pressure and biaxial load. A parametric study presented in this paper shows that these factors have a significant influence on the strength behaviour of aluminium plates.

Publication metadata

Author(s): Benson S, Downes J, Dow RS

Editor(s): Guedes Soares, C., Das, P.K .

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: Analysis and Design of Marine Structures: 2nd International Conference on Marine Structures (MARSTRUCT)

Year of Conference: 2009

Pages: 121-131

Date deposited: 16/08/2010

Publisher: Taylor & Francis

Library holdings: Search Newcastle University Library for this item

Series Title: MARSTRUCT Book Series

ISBN: 9780415549349