Presentation of an exact solution of the response of a rigid spherical object (inclusion) embedded in an elastic medium subjected to ground shock. It was found that the inclusion motion differs substantially from the free-field motion, both in acceleration and velocity. A slight change in displacement was also observed. The Memorandum also briefly investigates the effect of geometry on the response of an inclusion, and shows that the frequency response of a cylindrical inclusion is quite similar to that of the spherical. These studies indicate that a substantial eror could occur in shock measurements caused by stress-wave-diffraction phenomena.
This report is part of the RAND Corporation Research memorandum series. The Research Memorandum was a product of the RAND Corporation from 1948 to 1973 that represented working papers meant to report current results of RAND research to appropriate audiences.
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