Accession Number : AD0487427
Title : COLLECTION AND ANALYSIS OF SEISMIC WAVE PROPAGATION DATA. SUPPLEMENT 4: TWO-DIMENSIONAL WAVES IN AN INFINITE MEDIUM BOUNDED INTERNALLY BY A HARMONICALLY PRESSURIZED ELLIPSE,
Corporate Author : MICHIGAN UNIV ANN ARBOR INST OF SCIENCE AND TECHNOLOGY
Personal Author(s) : Pollack, Henry N.
Report Date : AUG 1966
Pagination or Media Count : 10
Abstract : This paper studies the role of the cavity shape in determining the two-dimensional far-field radiation from a pressurized source. The radiation patterns are obtained for both the longitudinal and transverse waves radiating from an elliptical region that varies from a line source to a circular source. The results of several cases show that: (1) for all noncicular boundzries the shear wave exists and consistently shows a four-lobed pattern of alternate polarity. (2) the ratio of wavelength to cavity ecicumference and the cavity shape (ellipticity) have a strong influence on the radiation patter. (Author)
Descriptors : (*SEISMIC WAVES, PATTERN RECOGNITION), DETONATION WAVES, STRESSES, MATHEMATICAL MODELS, DIFFERENTIAL EQUATIONS, EXPLOSIONS, MATHEMATICAL ANALYSIS.
Subject Categories : Seismology
Distribution Statement : APPROVED FOR PUBLIC RELEASE