On the effects of stress-wave diffraction on ground-shock measurements
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On the effects of stress-wave diffraction on ground-shock measurements by C. C. Mow

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Published by Rand Corporation in Santa Monica, Calif .
Written in English

Subjects:

  • Shock waves -- Diffraction.

Book details:

Edition Notes

StatementC.C. Mow and T. Repnau.
SeriesMemorandum -- RM-4556-PR, Research memorandum (Rand Corporation) -- RM-4556-PR..
ContributionsRepnau, Tiina.
The Physical Object
Paginationx, 47 p. :
Number of Pages47
ID Numbers
Open LibraryOL16648143M

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Book Search tips Selecting this option will search all publications across the Scitation platform Selecting this option will search all publications for the Publisher Effect of Diffraction on Stress‐Wave Measurement and a Concept for an Omnidirectional‐Dynamic‐Stress Gauge The Journal of the Acoustical Society of Author: F. C. Moon, C. C. Mow. ate transducer diffraction effects on ground stress-wave measurements. Included is an outline of a design for an omnidirectional pressure transducer with a response capable of being interpreted in terms of the theoretical solution presented in this Memorandum. Both the frequency response and transient behavior are : F. C. Moon, C. C. Mow.   1. Introduction. The discontinuities in the rock mass have significant effects on the wave propagation, which have been widely investigated (Leucci and Giorgi, , Zhao et al., , Fan et al., , Dong et al., ).On the other hand, the stress wave may also cause the cracking, which reduces the strength of rock by: 3.   However, neither study directly considered dynamic normal effective and shear stress wave‐phasing effects from a mechanical/process perspective and how this may affect strain accumulation. Indeed, while widely and implicitly accepted, the assumption that normal and shear stress wave‐phasing effects are not important in determining the.

measurements by profilometry and the residual stress measurements by synchrotron X-ray diffraction. The numerical results were further analytically explored to gain improved understanding of wave-solid interaction including shock wave attenuation and shock velocity variation. Physical Process & . blast and ground shock. The greater the arises partly from the ground shock depth of the burst point below the sur- transmitted through the surface into the face, the smaller is the energy expended air and partly from the release of the as air blast. The dimensions of the crater high-pressure gases produced in . A theory, in the form of a coupled system of reduced parabolic wave equations (equations (42)), is developed for stress wave propagation studies through inhomogeneous, locally isotropic, linearly elastic solids. A parabolic wave theory differs from a complete wave theory in allowing propagation only in directions of increasing range.   The radial stress wave and tangential stress wave around the deep roadway were obtained during the blasting. The results show that the diffraction start region and diffraction end region of the stress wave were related to the fluctuation of stress wave. The effect of depth on the dynamic stability of roadways were analyzed.

The Brownian motion/vibration of solid particles is considered to have little effect on the oscillation of pressure tensor autocorrelation function curve except the frequency. And when the particle size is comparable with the wavelength of stress wave, the diffraction of stress wave happens at the interface that will also weaken the oscillation. Simulation of stress wave diffraction by various obstacles in a continuous medium. N. A. Strel'chuk, O. K. Slavin & V. N. Shaposhnikov Soviet Mining volume 7, pages – ()Cite this article.   The propagation characteristics and rock breaking mechanism of explosive stress wave have aroused the interests of many researchers. This work proposed a method that separates the explosion stress wave from detonation gas and designed the testing unit accordingly. It combined the resistance ultra-dynamic strain test to conduct the strain measurement on local key points and .   To explore the effect of the joint contact area and temperature on the dynamic property of rock joints and wave propagation in granite rockmass, an impact test of a jointed granite specimen was conducted with a split–Hopkinson pressure bar.