The effect of bend radius on the impulse transfer characteristics of V-hulls

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dc.contributor.advisorLangdon, Genevieveen_ZA
dc.contributor.authorShekhar, Vinay Ramaswamien_ZA
dc.date.accessioned2016-06-24T06:32:37Z
dc.date.available2016-06-24T06:32:37Z
dc.date.issued2015en_ZA
dc.description.abstractThis work is based primarily on the effects of V-tip bend radii on the impulse transfer to V-plates subjected to localised blast loading. Three rigid V-plates with V-angles of 60°, 90° and 120° were designed and fabricated from steel plates. Blast tests with PE4 charges ranging from 19 g to 58 g at a stand-off distance (SOD) of 34mm were performed. The geometric scaling was based on the dimensions of the TM-57 landmine and the Casspir APC MK II. In the numerical model, the optimum element length for the air mesh was obtained by performing a mesh convergence study on the Arbitrary Lagrangian-Eulerian (ALE) mesh, and validated using the impulse values measured from a 58 g detonation onto a 120° V-plate as it resulted in the highest impulse. Element lengths of 1.5, 2.0 and 3.0mm were investigated. Element lengths of 1.5 and 2.0mm both produced accurate results, though the run-time for an element length of 2.0mm was significantly lower. A validation study compared the numerically predicted impulses with those of the experiments and the results were found to be within an acceptable percentage variation. Hence a 2.0mm element length was chosen for the Arbitrary Lagrangian-Eulerian mesh.en_ZA
dc.identifier.apacitationShekhar, V. R. (2015). <i>The effect of bend radius on the impulse transfer characteristics of V-hulls</i>. (Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Mechanical Engineering. Retrieved from http://hdl.handle.net/11427/20126en_ZA
dc.identifier.chicagocitationShekhar, Vinay Ramaswami. <i>"The effect of bend radius on the impulse transfer characteristics of V-hulls."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Mechanical Engineering, 2015. http://hdl.handle.net/11427/20126en_ZA
dc.identifier.citationShekhar, V. 2015. The effect of bend radius on the impulse transfer characteristics of V-hulls. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Shekhar, Vinay Ramaswami AB - This work is based primarily on the effects of V-tip bend radii on the impulse transfer to V-plates subjected to localised blast loading. Three rigid V-plates with V-angles of 60°, 90° and 120° were designed and fabricated from steel plates. Blast tests with PE4 charges ranging from 19 g to 58 g at a stand-off distance (SOD) of 34mm were performed. The geometric scaling was based on the dimensions of the TM-57 landmine and the Casspir APC MK II. In the numerical model, the optimum element length for the air mesh was obtained by performing a mesh convergence study on the Arbitrary Lagrangian-Eulerian (ALE) mesh, and validated using the impulse values measured from a 58 g detonation onto a 120° V-plate as it resulted in the highest impulse. Element lengths of 1.5, 2.0 and 3.0mm were investigated. Element lengths of 1.5 and 2.0mm both produced accurate results, though the run-time for an element length of 2.0mm was significantly lower. A validation study compared the numerically predicted impulses with those of the experiments and the results were found to be within an acceptable percentage variation. Hence a 2.0mm element length was chosen for the Arbitrary Lagrangian-Eulerian mesh. DA - 2015 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2015 T1 - The effect of bend radius on the impulse transfer characteristics of V-hulls TI - The effect of bend radius on the impulse transfer characteristics of V-hulls UR - http://hdl.handle.net/11427/20126 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/20126
dc.identifier.vancouvercitationShekhar VR. The effect of bend radius on the impulse transfer characteristics of V-hulls. [Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Mechanical Engineering, 2015 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/20126en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentDepartment of Mechanical Engineeringen_ZA
dc.publisher.facultyFaculty of Engineering and the Built Environment
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherMechanical Engineeringen_ZA
dc.titleThe effect of bend radius on the impulse transfer characteristics of V-hullsen_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMSc (Eng)en_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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