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Author: Joseph Simon Zelasko Publisher: ISBN: Category : Blast effect Languages : en Pages : 78
Book Description
The report documents the results of an airblast-induced ground-shock calculation performed at the U.S. Army Engineer Waterways Experiment Station (WES) for the Operation Prairie Flat 500-ton high-explosive (HE) event. A WES-modified version of the 2D axisymmetric LAYER Code developed by the Paul Weidlinger firm was used for the investigation. Each layer of the soil profile was mathematically modeled with a nonlinear elastic-plastic-compacting type constitutive model that provided good fits to the available material property test data. Field airblast measurements were used to develop an airblast routine suitable for code input. The code results, carried to 300 msec of real time, showed good quantitative and qualitative agreement with the field ground-motion measurements in regions outside the crater zone. The calculations reported herein represent initial efforts at WES to conduct comprehensive parametric studies of the effectiveness of contemporary mathematical constitutive models in predicting airblast-induced ground motions for several high-explosive field tests. The overall research program includes study of the influences of computational details such as boundary conditions, grid size, and time step and comparative analyses of the calculated ground motions and those recorded during the field test events. (Author).
Author: Joseph Simon Zelasko Publisher: ISBN: Category : Blast effect Languages : en Pages : 78
Book Description
The report documents the results of an airblast-induced ground-shock calculation performed at the U.S. Army Engineer Waterways Experiment Station (WES) for the Operation Prairie Flat 500-ton high-explosive (HE) event. A WES-modified version of the 2D axisymmetric LAYER Code developed by the Paul Weidlinger firm was used for the investigation. Each layer of the soil profile was mathematically modeled with a nonlinear elastic-plastic-compacting type constitutive model that provided good fits to the available material property test data. Field airblast measurements were used to develop an airblast routine suitable for code input. The code results, carried to 300 msec of real time, showed good quantitative and qualitative agreement with the field ground-motion measurements in regions outside the crater zone. The calculations reported herein represent initial efforts at WES to conduct comprehensive parametric studies of the effectiveness of contemporary mathematical constitutive models in predicting airblast-induced ground motions for several high-explosive field tests. The overall research program includes study of the influences of computational details such as boundary conditions, grid size, and time step and comparative analyses of the calculated ground motions and those recorded during the field test events. (Author).
Author: Paul F. Hadala Publisher: ISBN: Category : Blast effect Languages : en Pages : 484
Book Description
Outrunning ground shock data from the 100- to 10-psi overpressure decade in six large surface high explosive (HE) tests, three from a rock site and three from a glaciated soil site, were analyzed for the effect of gross changes in constitutive properties. Axisymmetric wave propagation code calculations in layered linear and nonlinear (incrementally elastic-plastic) media were performed to determine the effects of introducing nonlinearity, selected material property variations, and the relative importance of airblast and direct induced effects from surface explosions in the overpressure decade of interest.
Author: Patrick Lynett Publisher: World Scientific ISBN: 9814474673 Category : Technology & Engineering Languages : en Pages : 314
Book Description
In September 2006, research leaders in the field of coastal engineering, fluid mechanics, and wave theory met at Cornell University to celebrate the 60th birthday of Prof. Philip L-F Liu. This volume is a compilation of the research papers presented at the symposium, and includes both review and new research papers. Topics such as nonlinear wave theory, tsunamis, wave-structure interaction, turbulence, and modeling of complex sediment transport are discussed in this volume. All of the contributing authors are research collaborators of Prof. Liu, and include leaders in coastal engineering such as Maarten Dingemans, Hwung-Hweng Hwung, Nobu Kobayashi, Inigo Losada, Hocine Oumeraci, Costas Synolakis, and Harry Yeh.
Author: National Research Council Publisher: National Academies Press ISBN: 0309254671 Category : Science Languages : en Pages : 1024
Book Description
"Vive la Revolution!" was the theme of the Twenty-Third Symposium on Naval Hydrodynamics held in Val de Reuil, France, from September 17-22, 2000 as more than 140 experts in ship design, construction, and operation came together to exchange naval research developments. The forum encouraged both formal and informal discussion of presented papers, and the occasion provides an opportunity for direct communication between international peers. This book includes sixty-three papers presented at the symposium which was organized jointly by the Office of Naval Research, the National Research Council (Naval Studies Board), and the Bassin d'Essais des Carènes. This book includes the ten topical areas discussed at the symposium: wave-induced motions and loads, hydrodynamics in ship design, propulsor hydrodynamics and hydroacoustics, CFD validation, viscous ship hydrodynamics, cavitation and bubbly flow, wave hydrodynamics, wake dynamics, shallow water hydrodynamics, and fluid dynamics in the naval context.
Author: Joseph Simon Zelasko
Author: Joseph Simon Zelasko
Author: Bruce R. Phillips
Author: John Guy Jackson
Author: Paul F. Hadala
Author: Paul F. Hadala
Author: U.S. Army Engineer Waterways Experiment Station
Author: 
Author: Patrick Lynett
Author: Bernd Prange
Author: National Research Council