Interaction of a point sink with a transmitted shock wave in water

1976 ◽  
Vol 9 (5) ◽  
pp. 841-843
Author(s):  
L. P. Mikhailova ◽  
A. G. Ryabinin
Keyword(s):  
Shock Wave ◽  
Transmitted Shock Wave

scholarly journals Three-dimensional propagation of the transmitted shock wave in a square cross-sectional chamber

Shock Waves ◽  
2003 ◽  
Vol 13 (2) ◽  
pp. 103-111 ◽  
Author(s):  
Z. Jiang ◽  
C. Wang ◽  
Y. Miura ◽  
K. Takayama
Keyword(s):  
Shock Wave ◽  
Three Dimensional ◽  
Cross Sectional ◽  
Transmitted Shock Wave

Shock Wave Propagation Into a Dust-Gas Suspension Inside a Double-Bend Conduit

2002 ◽  
Vol 124 (2) ◽  
pp. 483-491 ◽  
Author(s):  
O. Igra ◽  
X. Wu ◽  
G. Q. Hu ◽  
J. Falcovitz
Keyword(s):  
Shock Wave ◽  
Wave Attenuation ◽  
Numerical Study ◽  
Effective Means ◽  
Solid Particles ◽  
Dust Particles ◽  
Mass Loading ◽  
Shock Attenuation ◽  
Dust Mass ◽  
Transmitted Shock Wave

Using conduits in which a transmitted shock wave experiences abrupt changes in its direction of propagation is an effective means for shock wave attenuation. An additional attenuation of the transmitted shock wave is obtained when the medium contained inside the conduit (through which the shock wave is transmitted) is a suspension rather than a pure gas. The present numerical study shows that adding small solid particles (dust) into the gaseous phase results in sharp attenuation of all shock waves passing through the conduit. It is shown that the smaller the dust particles diameter is, the higher the shock attenuation becomes. Increasing the dust mass loading in the suspension also causes a quick attenuation. By proper choice of dust mass loading in the suspension, or the particles diameter, it is possible to ensure that the emerging wave from the conduit exit channel is a (smooth) compression wave, rather than a shock wave.

Dispersion of Shock Wave Transmitted Into Non-Uniform Materials

2017 ◽  
Author(s):  
Susumu Kobayashi ◽  
Hiroki Henmi
Keyword(s):  
Shock Wave ◽  
Shock Waves ◽  
Human Brain ◽  
Reflected Shock Wave ◽  
Severe Damage ◽  
Reflected Shock ◽  
Sintered Metal ◽  
Materials Used ◽  
D Model ◽  
Transmitted Shock Wave

When a shock wave is incident on an obstacle, it is not only reflected back but also transmitted into the obstacle itself. The transmitted shock wave has not been fully investigated so far, compared with the reflected shock wave. In actual situations, the behavior and the characteristics of the transmitted shock wave are also of importance. In battlefields, human bodies are often subject to explosions and resulting shock waves. In particular, severe damage can be caused when a shock wave is transmitted into the human brain. In the present study, we conducted experiments to investigate the behavior and intensity of a shock wave, after it is transmitted into various materials. The materials used were sintered metal, silicone, and polyethylene foam. They were fixed on a specially devised model with a cavity, by which the resulting wave after a shock wave is transmitted could be observed. In order to understand what is happening in sintered metal, a 2-D model made of straws was devised and used.

Propagation of an Air-transmitted Shock Wave in Muscular Tissue

Nature ◽  
1956 ◽  
Vol 177 (4504) ◽  
pp. 380-381 ◽  
Author(s):  
CARL-JOHAN CLEMEDSON ◽  
ARNE JÖNSSON ◽  
HJALMAR PETTERSSON
Keyword(s):  
Shock Wave ◽  
Muscular Tissue ◽  
Transmitted Shock Wave

Numerical simulation of flow around a body’s system beyond a transmitted shock wave

2011 ◽  
Vol 56 (12) ◽  
pp. 618-621 ◽  
Author(s):  
I. A. Bedarev ◽  
A. V. Fedorov ◽  
V. M. Fomin
Keyword(s):  
Numerical Simulation ◽  
Shock Wave ◽  
Transmitted Shock Wave

A new type of defect structure in 124-superconducting oxide revealed by HREM

1991 ◽  
Vol 49 ◽  
pp. 1092-1093
Author(s):  
R. Sharma ◽  
B.L. Ramakrishna ◽  
N.N. Thadhani ◽  
D. Hianes ◽  
Z. Iqbal
Keyword(s):  
Shock Wave ◽  
Defect Structure ◽  
Neutron Radiation ◽  
Weak Links ◽  
Defect Structures ◽  
New Materials ◽  
New Type ◽  
Current Densities ◽  
Processing Techniques ◽  
Microstructural Studies

After materials with superconducting temperatures higher than liquid nitrogen have been prepared, more emphasis has been on increasing the current densities (Jc) of high Tc superconductors than finding new materials with higher transition temperatures. Different processing techniques i.e thin films, shock wave processing, neutron radiation etc. have been applied in order to increase Jc. Microstructural studies of compounds thus prepared have shown either a decrease in gram boundaries that act as weak-links or increase in defect structure that act as flux-pinning centers. We have studied shock wave synthesized Tl-Ba-Cu-O and shock wave processed Y-123 superconductors with somewhat different properties compared to those prepared by solid-state reaction. Here we report the defect structures observed in the shock-processed Y-124 superconductors.

Investigation of shock-wave deformation history from recovered structure

1986 ◽  
Vol 44 ◽  
pp. 434-435
Author(s):  
M.A. Mogilevsky ◽  
L.S. Bushnev
Keyword(s):  
Shock Wave ◽  
Plastic Deformation ◽  
Dislocation Density ◽  
Shock Waves ◽  
Shock Front ◽  
Single Crystals ◽  
Residual Deformation ◽  
Deformation Structure ◽  
Deformation History ◽  
Deformation Velocity

Single crystals of Al were loaded by 15 to 40 GPa shock waves at 77 K with a pulse duration of 1.0 to 0.5 μs and a residual deformation of ∼1%. The analysis of deformation structure peculiarities allows the deformation history to be re-established.After a 20 to 40 GPa loading the dislocation density in the recovered samples was about 1010 cm-2. By measuring the thickness of the 40 GPa shock front in Al, a plastic deformation velocity of 1.07 x 108 s-1 is obtained, from where the moving dislocation density at the front is 7 x 1010 cm-2. A very small part of dislocations moves during the whole time of compression, i.e. a total dislocation density at the front must be in excess of this value by one or two orders. Consequently, due to extremely high stresses, at the front there exists a very unstable structure which is rearranged later with a noticeable decrease in dislocation density.

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