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dc.contributor.authorAbrahamsen, Bjørn Christian
dc.contributor.authorAlsos, Hagbart Skage
dc.contributor.authorAune, Vegard
dc.contributor.authorFagerholt, Egil
dc.contributor.authorFaltinsen, Odd Magnus
dc.contributor.authorHellan, Øyvind
dc.date.accessioned2020-09-07T12:48:08Z
dc.date.available2020-09-07T12:48:08Z
dc.date.created2020-08-12T11:19:50Z
dc.date.issued2020
dc.identifier.citationPhysics of Fluids. 2020, 32 (8), .en_US
dc.identifier.issn1070-6631
dc.identifier.urihttps://hdl.handle.net/11250/2676701
dc.description.abstractThis paper investigates large, plastic deflections of a square plate due to impact on calm water. Most research in the area has examined linear elastic structural responses to such impact, but hydrodynamic responses during large, plastic deformations of engineering structures remain under-explored. A setup for an experimental drop test was designed for this purpose with equal emphasis on the hydrodynamical and structural mechanical aspects. Dual cameras were used to monitor the deforming plate from above during impact, and its deformation was tracked using a three-dimensional digital image correlation technique. The complex hydrodynamics of the impact were captured using a high-speed camera from below. The experimental results for flat impact showed a large air pocket under the deforming plate. The material properties of the plate were documented through separate tests. Hydroelastic theories were offered to account for large deformations and validated against the experimental results. Analytical hydroplastic theory shows that the maximum deflection is approximately equal to the velocity of impact times the square root of the ratio of the added mass to the plastic membrane capacity of the plate. An important source of error between the theory and the experiments was the effect of deceleration of the drop rig on deflection of the plate. This error was estimated using direct force integration and Wagner’s theory.en_US
dc.language.isoengen_US
dc.publisherAIP Publishingen_US
dc.titleHydroplastic response of a square plate due to impact on calm wateren_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionpublishedVersionen_US
dc.source.pagenumber21en_US
dc.source.volume32en_US
dc.source.journalPhysics of Fluidsen_US
dc.source.issue8en_US
dc.identifier.doi10.1063/5.0013858
dc.identifier.cristin1822946
dc.description.localcodePublished by AIP Publishing. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article appeared in Journal of Applied Physics and may be found at http://dx.doi.org/10.1063/5.0013858en_US
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode2


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