Finite element modelling of hydroelasticity in hull-water impacts
2006 (English)Licentiate thesis, comprehensive summary (Other scientific)
The work in this thesis focuses on the use of explicit finite element analysis (FEA) in the modelling of fluid-structure interaction of panel-water impacts. Paper A, considers modelling of a two-dimensional rigid wedge impacting a calm water surface. From analytical methods and results of a systematic parameter study a generalised approach for determination of fluid discretization and contact parameters in the modelling of arbitrary hull-water impact situations is developed and presented. In paper B the finite element modelling methodology suggested in paper A is evaluated for elastic structures by a convergence study of structural response and hydrodynamic load. The structural hydroelastic response is systematically studied by a number of FE-simulations of different impact situations concerning panel deadrise, impact velocity and boundary conditions. In paper B a tentative method for dynamic characterization is also derived. The results are compared with other published results concerning hydroelasticity in panel water impacts. The long-term goal of this work is to develop design criteria, by which it can be determined whether the loading situation of a certain vessel type should be regarded as quasi-static or dynamic, and which consequence on the design a dynamic loading has.
Place, publisher, year, edition, pages
Stockholm: KTH , 2006. , 32 p.
Trita-AVE, ISSN 1651-7660 ; 2006:93
fluid-structure interaction, hydroelasticity, hull-water impact, high-speed craft, slamming, explicit finite element methods
IdentifiersURN: urn:nbn:se:kth:diva-4304ISBN: 978-91-7178-548-0OAI: oai:DiVA.org:kth-4304DiVA: diva2:11713
2007-03-20, Sal D3, KTH, Lindstedtsvägen 5, Stockholm, 13:00
Temarel, Pennny, Professor
QC 201011262007-03-132007-03-132010-11-26Bibliographically approved
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