Author: George Y. BaladiPublisher:
ISBN:
Category : Blast effect
Languages : en
Pages : 126
Book Description
Ground Shock Calculation Parameter Study
Author: George Y. BaladiPublisher:
ISBN:
Category : Blast effect
Languages : en
Pages : 126
Book Description
Ground Shock Calculation Parameter Study. Report 2. Effects of Various Bottom Boundary Conditions
Author: George Y. BaladiPublisher:
ISBN:
Category :
Languages : en
Pages : 112
Book Description
A parametric study of the effects of rigid, roller, and transmitting bottom boundary conditions on high-explosive airblast-induced superseismic ground shock calculations was conducted using a WES-modified version of the two-dimensional (2D) axisymmetric LAYER code. The constitutive relation used was a nonlinear, elastic-plastic, hybrid-type model. The constitutive properties used were those of the two-layered soil profile employed in Report 1 of this series. Seven different calculations were performed to study the effects of the depth to the bottom boundary and the differences in ground shock resulting from the use of different types of boundaries at a given depth. Results of this study showed that the transmitting boundary provides an adequate simulation of an elastic medium beyond the calculation domain for a large class of finite difference 2D nuclear ground shock boundary value problems in elastic, inelastic, and layered media under superseismic conditions. (Author).
Ground Shock Calculation Parameter Study
Author: George Y. BaladiPublisher:
ISBN:
Category : Blast effect
Languages : en
Pages : 174
Book Description
The report is the third in a series, 'Ground Shock Calculation Parameter Study, ' centered on the Prairie Flat Event. The first report describes the effect of different elastic-ideally plastic constitutive model formulations on calculated ground shock, while the second report describes the effect of different bottom boundary conditions. The report documents the results of a parameter study conducted to determine the effects of using different types of nonlinear constitutive models to fit a given set of soil property data in calculations of high-explosive, airblast-induced, superseismic ground shock. (Modified author abstract).
The Shock and Vibration Digest
Author: Results of Two Free-field Code Calculations Versus Field Measurements for the Distant Plain 1A Event
Author: Bruce R. PhillipsPublisher:
ISBN:
Category : Mathematical models
Languages : en
Pages : 82
Book Description
Nuclear Science Abstracts
Author: List of Publications of the U.S. Army Engineers Waterway Experiment Station
Author: United States. Army. Corps of EngineersPublisher:
ISBN:
Category :
Languages : en
Pages : 438
Book Description
Ground Shock Calculation Parameter Study
Author: George Y. BaladiPublisher:
ISBN:
Category : Mathematical models
Languages : en
Pages : 68
Book Description
A parametric study was conducted to determine the effect of using various nonlinear elastic-plastic constitutive model formulations to fit a given set of soil property data in calculating high-explosive (HE), airblast-induced, superseismic ground shock. The code used was a modified version of the 2D axisymmetric LAYER code developed by the Paul Weidlinger firm. A constant shear modulus model, a constant Poisson's ratio model, and a hybrid-type model were employed. Two series of calculations were performed. In the first, the effect of an HE-type airblast on a deep highly compressible layer of soil was investigated for the three different models. In the second series, a two-layer soil profile comprising a shallow layer of highly compressible soil over a deep highly incompressible material was used. The study showed that the radial stress-, velocity-, and displacement-time histories at shallow depths were strongly influenced by the type of constitutive model used to represent the soils' mechanical behavior. Relatively large differences in maximum and final radial displacement were observed for the different models. (Author).
List of Publications of the U.S. Army Engineer Waterways Experiment Station
Author: U.S. Army Engineer Waterways Experiment StationPublisher:
ISBN:
Category : Hydraulic engineering
Languages : en
Pages : 430
Book Description
List of Publications of the U.S. Army Engineer Waterways Experiment Station
Author: Waterways Experiment Station (U.S.)Publisher:
ISBN:
Category : Hydraulic engineering
Languages : en
Pages : 322
Book Description