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dc.contributor.authorWebster, Keith Gordonen_US
dc.date.accessioned2014-03-14T20:31:12Z
dc.date.available2014-03-14T20:31:12Z
dc.date.issued2007-01-29en_US
dc.identifier.otheretd-01302007-141530en_US
dc.identifier.urihttp://hdl.handle.net/10919/31077
dc.description.abstractThis thesis investigates the characteristics of a close proximity underwater explosion and its effect on a ship-like structure. Finite element model tests are conducted to verify and validate the propagation of a pressure wave generated by an underwater explosion through a fluid medium, and the transmission of the pressure wave in the fluid to a structure using the Multi-Material Arbitrary Lagrangian/Eulerian method. A one dimensional case modeling the detonation of a spherical TNT charge underwater is investigated. Three dimensional cases modeling the detonation of an underwater spherical TNT charge, and US Navy Blast Test cases modeling a shape charge and a circular steel plate, and a shape charge and a Sandwich Plate System (SPS) are also investigated. This thesis provides evidence that existing tools and methodologies have some capability for predicting early-time/close proximity underwater explosion effects, but are insufficient for analyses beyond the arrival of the initial shock wave. This thesis shows that a true infinite boundary condition, a modified Gruneisen equation of state near the charge, and the ability to capture shock without a very small element size is needed in order to provide a sufficient means for predicting early-time/close proximity underwater explosion effects beyond the arrival of the initial shock wave.en_US
dc.publisherVirginia Techen_US
dc.relation.haspartKeithGWebster_Thesis.pdfen_US
dc.rightsI hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to Virginia Tech or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report.en_US
dc.subjectFluid/Structure Interactionen_US
dc.subjectUNDEXen_US
dc.subjectSandwich Plate System (SPS)en_US
dc.subjectUS Navy Blast Testen_US
dc.subjectMMALEen_US
dc.subjectProximityen_US
dc.titleInvestigation of Close Proximity Underwater Explosion Effects on a Ship-Like Structure Using the Multi-Material Arbitrary Lagrangian Eulerian Finite Element Methoden_US
dc.typeThesisen_US
dc.contributor.departmentAerospace and Ocean Engineeringen_US
dc.description.degreeMaster of Scienceen_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelmastersen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineAerospace and Ocean Engineeringen_US
dc.contributor.committeechairBrown, Alan J.en_US
dc.contributor.committeememberNeu, Wayne L.en_US
dc.contributor.committeememberHughes, Owen F.en_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-01302007-141530/en_US
dc.date.sdate2007-01-30en_US
dc.date.rdate2010-03-07
dc.date.adate2007-03-07en_US


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