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Towards determination of local and overall displacements of the Vasa ship structure: Effect of its mechanical connections
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Mechanics.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Mechanics.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Mechanics.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Mechanics.
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2014 (English)Conference paper, Published paper (Refereed)
Abstract [en]

The warship Vasa from the 17th century must be preserved for the future generations. There are many concerns currently being addressed by ongoing research efforts. The support structure is one of them, which needs to be re-designed. In order to do this, the local and overall deformation of the Ship’s structure must be identified. The earlier impregnation of PEG on the Vasa material is causing the material to creep significantly more than oak without PEG, resulting in an increasing deformation of the ship. In addition to this, the effect of the mechanical connections of the ship needs to be considered. Experimental tests were performed on a 1:1 scale replica of a representative section of the Vasa ship. Different load cases were applied in order to represent the current situation of the vessel’s connections. Linear displacement gauges as well as non-contacting image correlation systems were used as measurement methods to analyze the behaviour of the test sample. A validated computer model, using finite element method (FEM) simulations, with Vasa-material properties will be used to calculate the stiffness coefficients, which will be included in a simplified full-computer model of the entire vessel. Based on the latter, the overall and local displacements will be obtained. This is a necessary input in a full numerical model of the ship to optimize a new support structure.

Place, publisher, year, edition, pages
2014.
National Category
Applied Mechanics
Identifiers
URN: urn:nbn:se:uu:diva-267370OAI: oai:DiVA.org:uu-267370DiVA: diva2:872906
Conference
Historic Ships-The Royal Institution of Naval Architects
Available from: 2015-11-20 Created: 2015-11-20 Last updated: 2016-04-22

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Afshar, RVorobyev, ABommier, FGamstedt, K

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CiteExportLink to record
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Citation style
  • apa
  • ieee
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  • de-DE
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  • en-US
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  • nn-NO
  • nn-NB
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Output format
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