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Finite element simulation of blank torpedo impact on submarine hulls

Citation

Chatterton, MG and Ojeda, R, Finite element simulation of blank torpedo impact on submarine hulls, Ocean Engineering, 82, (May) pp. 128-134. ISSN 1873-5258 (2014) [Refereed Article]

Copyright Statement

Copyright 2014 Elsevier Ltd.

DOI: doi:10.1016/j.oceaneng.2014.02.014

Abstract

The paper presents the development, evaluation and validation of a finite element model for the simulation of the impact of a blank torpedo against a submarine pressure hull. A parametric, shell finite element model was generated and analysed using ANSYS Finite Element Package to explore the effects of different loading conditions and analysis types in the accuracy of the results. Results were compared to a series of drop tests conducted by the Australian Defence, Science and Technology Organisation (DSTO). Geometric and material non-linear models were compared against varying methods of load applications. A numerical model subjected to a concentrated load was found to provide a poor representation of the drop tests. A clear improvement in the accuracy of the results was achieved by implementing a distributed impact load case; however, a full nonlinear analysis involving large deflection, plasticity and contact was found to offer the best agreement with the experimental test results.

Item Details

Item Type:Refereed Article
Keywords:Internal mechanics; Non-linear finite element method; Structural crashworthiness
Research Division:Engineering
Research Group:Maritime Engineering
Research Field:Ship and Platform Structures
Objective Division:Defence
Objective Group:Defence
Objective Field:Navy
Author:Chatterton, MG (Mr Matthew Chatterton)
Author:Ojeda, R (Dr Roberto Ojeda Rabanal)
ID Code:90369
Year Published:2014
Web of Science® Times Cited:2
Deposited By:NC Maritime Engineering and Hydrodynamics
Deposited On:2014-04-01
Last Modified:2017-11-03
Downloads:0

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