Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"Plate impact"”.
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Free Elastic Plate Impact into Water
… problems where a body with small deadrise angle impacts onto an undisturbed water surface of infinite depth. In this study, two-dimensional impact models based on the Wagner theory are developed which account for the elasticity of the body, for large horizontal speed of the body and flow …
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Modeling of plate impact dynamics and noise
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1999.
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An Overview of Body Armor and Single Plate Impact Dynamics
… personal body armor was constructed of simple plates of high- strength alloys. However, with the advancement of modern combat and weaponry, particularly armor-piercing ammunition, personal body armor has evolved into more complex and effective metal, ceramic, and composite structures. This …
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Finite element analysis of shear band failure with particular reference to circular plate impact
… Particular reference is made to the normal impact between blunt projectiles and circular plates of thin to intermediate thickness. The thesis presents a two dimensional axisymmetric and plane strain finite element computer program related to the Lagrangian reference frame. A four node …
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Shock compression of water and solutions of ammonium nitrate
… facility, using a single stage gas gun in the ‘plate impact’ configuration, is described, along with associated experimental diagnostics. Measurements of, and improvements to, the tilt at impact are reported. The problem of shock temperature is discussed, including a brief review of the relevant …
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Shock compression and dynamic fragmentation of geological materials
… each ma- terial was measured though a series of plate impact experiments using a light gas gun. The experiments focused on the stress region of interest for blast mining, 0 to 12 GPa. The, fully dense, Lake Quarry Granite was found to have a constant shock speed, which agreed with the elastic …
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Energy Absorption and Dynamic Behaviors of Architectured Interpenetrating Phase Composites
… lattice embedded in an aluminum matrix. Through plate impact simulations, we find that the complex mesoscale geometry reduces shock velocity relative to monolithic constituents, slowing and spreading the shock front via reflection and redirection. In the fine-scale, we can predict several aspects …
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High Strain Rate Properties of Geological Materials
… has been investigated through a series of plate impact experiments. The materials involved were supplied from various mines by De Beers and Rio Tinto and were generically termed: sandstone, scilified siltstone, kimberlite, quartz/feldspathic gneiss, biotite schist, amphibolite, amphibolitic …
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Investigation of strain rate sensitivity of polymer matrix composites
… model for a fibre reinforced polymer (FRP) plates impacted at varying strain rates. The work was divided into three facets, firstly to characterize the FRP material at varying strain rates, to develop a constitutive model to elucidate the relationship between strain rate and ultimate stress …
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Determining the Reaction Zone Length in Shock Initiated PETN
… reaction from the mechanical response to shock, plate impact experiments were performed on an inert simulant: a fine icing sugar with comparable particle size. The shock velocity and rise time were found to exhibit dependence on the thickness of the bed, suggesting that these effects may also …
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Hot spots in ammonium nitrate
… useful as a mock for those compositions. In a plate impact experiment on a single layer of P2O5 prills, very little light was observed. This indicated that these prills were sufficiently inert for these purposes. The light produced by shocked granular ammonium nitrate beds and single prill …