Investigation of Close Proximity Underwater Explosion Effects on a Ship-Like Structure Using the Multi-Material Arbitrary Lagrangian Eulerian Finite Element Method
dc.contributor.author | Webster, Keith Gordon | en |
dc.contributor.committeechair | Brown, Alan J. | en |
dc.contributor.committeemember | Neu, Wayne L. | en |
dc.contributor.committeemember | Hughes, Owen F. | en |
dc.contributor.department | Aerospace and Ocean Engineering | en |
dc.date.accessioned | 2014-03-14T20:31:12Z | en |
dc.date.adate | 2007-03-07 | en |
dc.date.available | 2014-03-14T20:31:12Z | en |
dc.date.issued | 2007-01-29 | en |
dc.date.rdate | 2010-03-07 | en |
dc.date.sdate | 2007-01-30 | en |
dc.description.abstract | This 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 |
dc.description.degree | Master of Science | en |
dc.identifier.other | etd-01302007-141530 | en |
dc.identifier.sourceurl | http://scholar.lib.vt.edu/theses/available/etd-01302007-141530/ | en |
dc.identifier.uri | http://hdl.handle.net/10919/31077 | en |
dc.publisher | Virginia Tech | en |
dc.relation.haspart | KeithGWebster_Thesis.pdf | en |
dc.rights | In Copyright | en |
dc.rights.uri | http://rightsstatements.org/vocab/InC/1.0/ | en |
dc.subject | Fluid/Structure Interaction | en |
dc.subject | UNDEX | en |
dc.subject | Sandwich Plate System (SPS) | en |
dc.subject | US Navy Blast Test | en |
dc.subject | MMALE | en |
dc.subject | Proximity | en |
dc.title | Investigation of Close Proximity Underwater Explosion Effects on a Ship-Like Structure Using the Multi-Material Arbitrary Lagrangian Eulerian Finite Element Method | en |
dc.type | Thesis | en |
thesis.degree.discipline | Aerospace and Ocean Engineering | en |
thesis.degree.grantor | Virginia Polytechnic Institute and State University | en |
thesis.degree.level | masters | en |
thesis.degree.name | Master of Science | en |
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