Abstract

The attenuation of plane stress waves generated by a decaying surface pressure in a bi-linear medium is investigated, to obtain an approximate solution to the problem of a medium with a stress strain diagram of positive curvative. One-dimensional wave equations are derived, and it is demonstrated that, beyond a given distance from the surface, the intensity of the peak stress and particle velocity depends only on a single parameter. This result is of significance in establishing the relevant physical characteristics of granular soils which are subjected to high intensity nuclear surface blast pressures.

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