CASE WESTERN RESERVE UNIV CLEVELAND OHIO SCHOOL OF ENGINEERING
Click on the titles below to find US government-authored or -collected reports written by CASE WESTERN RESERVE UNIV CLEVELAND OHIO SCHOOL OF ENGINEERING
This paper presents an analytical method to study free and forced longitudinal vibrations of embankment dams. Both shear and dilational deformations are taken into account, and the dam is modeled as a linear homogeneous prism with a wedge-shape cross section, bounded by two vertical (abutment) and one horizontal (riverbed) planes. Numerical results demonstrate the effect of the length and height of the dam on its natural frequencies and its modal ...
The paper presents the results of an analytical study of vertical vibrations of massive strip foundations excited by constant-force or rotating-mass type oscillators and placed on the surface of a linearly hysteretic soil layer on rock. A semianalytical method based on a direct solution of the wave equations in terms of displacements and accounting for the exact physical conditions at the rough layer interfaces and the soil surface is briefly ...
The main thrust of this paper is to compare the effects of Rayleigh waves to those of vertical shear waves on the dynamic response of a variety of realistic soil deposits. Using a modified version of the Thomson-Haskell-Harkrider method, the variation with depth of horizontal displacements and shear stresses resulting from the passage of the two types of waves is determined. Comparisons of their effects indicate that R- and S-waves ...
This report describes the essential characteristics of a time resolved x-ray spectrometer. The spectrometer uses a convex curved LiF crystal which diffracts the x-rays onto a plastic (NE 102) scintillator. The spectrometer is capable of analyzing spectra in the range of 4.2 KeV to 12.4 KeV. It can also time resolve the observed spectra to approximately 2.4 micro sec. with a wavelength discrimination better than 4%. The report also contains ...
The report is divided in two parts. In the first part an account is given of the measurement of the momentum distribution of the deuterons ejected from a dense plasma focus. The results show the existence of a pronounced non-Maxwellian distribution and a small population of deuterons accelerated to the voltage of the condenser bank. In the second part theoretical calculation of laser heating establish the presence of large density ...
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