GROUND SHOCK AND THE SURVIVAL OF THE CONTENTS OF PERSONNEL SHELTERS.
STANFORD RESEARCH INST MENLO PARK CA
Pagination or Media Count:
A study was made of the feasibility of developing a reasonably simple method of predicting nuclear blast-induced ground motion in a wide variety of media and geology to assist OCD in shelter construction and emplacement. The approach is to use a generalized ray analysis in which velocity discontinuities in a linear elastic medium are considered to propagate along geometrical lines rays much as the propagation of light can be described. The ray method is exact for the amplitude of the first arrival or alternatively for the high frequency portion of the signal. To be fully useful to OCD, the prediction method should predict low as well as high frequency signals, since an observed characteristic of ground motion is an oscillatory waveform. Therefore, it is recommended that the analysis be carried out for media and yields for which there are experimental data for comparison purposes and as a step in the refinement of the method to include prediction of high- and low-frequency signals. It is recommended that subsequent calculations be made of situations of practical interest to develop a scaling system. Author
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