Frontal collision of a tanker against a rigid structure

Document typeConference report
Defense date2015
PublisherCIMNE
Rights accessOpen Access
Abstract
In this research, an evaluation of a frontal collision of a tanker with bulbous bow
against a rigid structure was performed by reproducing experimentally this scenario in
reduced scale and by numerical modeling using the finite element method. The purpose of this
analysis was to evaluate the impact force and structural collapse mode of the bulbous bow. A model
of an oil tanker in a reduced scale of 1:100 was fabricated for the collision test based on a
simplified geometries of naval structures made of mild steel sheets. Similarity laws,
developed particularly for structural impact, were presented and employed to predict the
mechanical response of a real scale collision accident from the reduced scale test
results. Advantages, challenges and limitations in fabrication and employment of reduced
scale models were also commented. A finite element model of tanker collision against a rigid wall
was also presented. The material model took the mechanical properties of naval steel
into account, under static and dynamic loading. The collapse mode appearance of the bulbous bow
observed in the numerical modeling resulted to be analogous with experimental results
in reduced scale. Furthermore, results obtained from experimental and numerical approaches
were compared with empirical formulae of impact force when a ship collides a bridge pier showing
a good agreement and demonstrating the potential of using reduced scale ship
models in collision evaluation.
CitationCalle, M.A.G.; Oshiro, R.E.; Marcílio, A. Frontal collision of a tanker against a rigid structure. A: MARINE VI. "MARINE VI : proceedings of the VI International Conference on Computational Methods in Marine Engineering". CIMNE, 2015, p. 1015-1026. ISBN 978-84-943928-6-3.
ISBN978-84-943928-6-3
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