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US Department of Commerce
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Mark h. Emery ; Philip j. Valent ; L. dale Bibee ; Naval research laboratory | US Department of Commerce | 1995The mine countermeasure research program is an Office of Naval Research program that addresses the physical characterization and modeling of the surf zone environment, explosive shock propagation and mitigation in this environment, and the means[...]
Article en page(s) : IV, 14 Index. décimale : 624.131.5 Langues: Anglais Books
Field experiments have shown that scattering by random heterogeneity has a significant influence on explosively induced stress wave propagation. Physical models of stress wave propagation created by explosive tests are based on the traditional a[...]
Article en page(s) : p. mult. Index. décimale : 624.131.5 Langues: Anglais Books
Explosive field tests were conducted in unsaturated Poudre Valley sand for the determination of peak ground shock parameters, propagation velocity and attenuation trends as a function of compactive saturation. The sand was compacted moist to a d[...]
Article en page(s) : XVIII, 153 Index. décimale : 624.131.5 Langues: Anglais Books
S.j. Pierce ; W.a. Charlie ; Geotechnical engineering program colorado state university | US Department of Commerce | 1990Compressive stress wave propagation through soils is of interest to the armed forces, mining industry and geophysical investigations. Research on high amplitude, short duration compressive loadings is important in understanding the soil structur[...]
Article en page(s) : p. mult. Index. décimale : 624.131.5 Langues: Anglais Books
Jerry Brown ; Donald w. Murrell ; John h. Stout ; Army engineer waterways experiment station | US Department of Commerce | 1990This report describes tests conducted on shock transmitted through rubble screens from explosions on the top of the screens. The results are compared with shock transmitted through slabs and through free soil. There appears to be little differen[...]
Article en page(s) : IV, 28 Index. décimale : 624.131.5 Tags : soil vibrations ; Explosions (E) ; Soil mechanics ; Soil dynamics Langues: Anglais Books
Martin h. Sadd ; Mohammad Hossain ; Behza Rohani ; Rhode island university | US Department of Commerce | 1986This report describes an investigation into one-dimensional stress wave propagation in granular materials with microstructure. The study employs the distributed body concept advanced by Goodman and the associated wave propagation studies conduct[...]
Article en page(s) : p. mult. Index. décimale : 624.131.5 Langues: Anglais Books
J.d. Collins ; R.d. Daniels ; K.b. Overbeck ; J.h. wiggings company | US Department of Commerce | 1978A qualitative analysis of the effect of uncertainty on the free-field ground shock estimation process is presented. The approach is to examine the process as a modeling problem and examine each part so as to isolate uncertainties in the framewor[...]
Article en page(s) : IV, 84 Index. décimale : 624.131.5 Langues: Anglais Books
M.a. Mikulinskiy ; P.s. Mironov ; G.v. Kuznetsov ; Foreign technology division | US Department of Commerce | 1972The report presents a study of the effect of shock waves from a controlled burst on the soil and rocks in the immediate vicinity of a burst at a quarry. It details the general equations of shock waves in soils; determination of parameters of sei[...]
Article en page(s) : IV, 13 Index. décimale : 624.131.5 Langues: Anglais Books
A theoretical analysis is made of the structure of a stationary shock wave in soft water-saturated soils and rocks on the assumption that identical pressures exist in the phases. It is indicated that two-phase solid media with different phase st[...]
Article en page(s) : p. mult. Index. décimale : 624.131.5 Langues: Anglais Books
A mathematical model was developed to describe one-dimensional wave propagation in a resonating column of a material with a nonlinear constitutive relation. The nonlinear partial differential equation which resulted was solved using a finite dif[...]
Article en page(s) : VIII, 71 Index. décimale : 624.131.5 Tags : Soil mechanics ; Mechanics--Vibrations ; Dynamics Langues: Anglais Books
Richard Vaughn ; New mexico university albuquerque eric h. wang civil enginering research facility | US Department of Commerce | 1967The effects of wall boundary friction and support conditions on the behavior of dense 20-30 Ottawa sand were studied in a nominal 2-foot-diameter by 4-foot-deep soil test container subjected to shock loading from a 2-foot-diameter by 65-foot ver[...]
Article en page(s) : XIII, 156 Index. décimale : 624.131.5 Langues: Anglais Books
Papers were presented on the following topics: Axi-symmetric elastic-plastic ground motions from nuclear bursts; Summary report on development of a computer program to predict free-field ground motion; Characteristic emission from an underground[...]
Mention d'édition : rev. ed Article en page(s) : 342 Index. décimale : 624.131.5 Langues: Anglais Books
J.v. Zaccor ; W.l. Durbin ; N.r. Wallace ; H.g. Mason ; United research services | US Department of Commerce | 1965This report summarizes current understanding of wave propagation in a cohesionless dry granular material in response to loadings suddenly applied and held at constant magnitude. Experimental studies of propagating waves were conducted in which m[...]
Article en page(s) : p. mult. Index. décimale : 624.131.5 Langues: Anglais Books
Article en page(s) : II, 13 Langues: Anglais Books
A numerical method and its machine program for calculating nonlinear viscoelastic wave propagation in soils are described. Solutions give particle velocity, stress and strain as functions of time and distance from the stress source
Article en page(s) : 49 Index. décimale : 624.131.5 Langues: Anglais