Author: Paul F. HadalaPublisher:
ISBN:
Category : Boundary value problems
Languages : en
Pages : 62
Book Description
Evaluation of a Transmitting Boundary for a Two-dimensional Wave Propagation Computer Code
Author: Paul F. HadalaPublisher:
ISBN:
Category : Boundary value problems
Languages : en
Pages : 62
Book Description
A Transmitting Boundary for Finite-difference Analysis of Wave Propagation in Solids
Author: Min Nan TsengPublisher:
ISBN:
Category : Difference equations
Languages : en
Pages : 250
Book Description
The object of this study is to develop a transmitting boundary suitable for use in numerical solution of wave propagation problems. The detailed analysis refers to two-dimensional problems in plane strain. The medium near the transmitting boundaries must be linear, but inelastic action is permitted within the region. The method consists first of splitting the field near the boundaries into its irrotational (P) and equivoluminal (S) components by finding potentials for the motion near the boundaries. Transmitting boundaries are then developed which pass P and S waves with no interaction. Two types of transmitting boundary have been devised. In the first, the disturbances are taken as locally plane near the boundary in each time interval. A more refined approximation is also obtained in which the disturbances are taken as locally cylindrical. Numerical comparisons have been carried out which indicate that these transmitting boundaries actually perform well and are suitable for practical computation. In addition, other boundary conditions are examined by the use of potentials, especially the boundary between two elastic layers with different properties. Calculations show that the numerical solutions in the vicinity of such a boundary are stable, unlike the results obtained in some earlier work which did not use potentials.
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).
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
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
Scientific and Technical Aerospace Reports
Author: Nuclear Science Abstracts
Author: Computing Methods in Applied Sciences and Engineering, 1977. Third International Symposium, December 5-9, 1977, IRIA LABORIA, Institut de Recherche d`Informatique et d`Automatique
Author: R. GlowinskiPublisher: Springer
ISBN: 3540354115
Category : Mathematics
Languages : en
Pages : 386
Book Description
Linear Two-dimensional Analysis of Soil Dynamics Problems in Semi-infinite Layered Media
Author: Günter WaasPublisher:
ISBN:
Category : Soil dynamics
Languages : en
Pages : 396
Book Description