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|Title:||Results of two free-field code calculations versus field measurements for the Distant Plain 1A event|
|Authors:||United States. Defense Nuclear Agency.|
Phillips, Bruce R.
Baladi, George Y.
Distant Plain (Event)
Finite difference method
|Publisher:||Soils and Pavements Laboratory (U.S.)|
Engineer Research and Development Center (U.S.)
Abstract: This report presents the results of a postshot, two-dimensional code calculation, performed by personnel of the U. S. Army Engineer Waterways Experiment Station (WES), of the Distant Plain 1A Event, a 20-ton, high-explosive tower shot executed at the Defence Research Establishment, Suffield, Alberta, Canada, during August 1967. The calculation is compared with an earlier calculation performed by the Paul Weidlinger (PW) Consulting Engineering Firm and with actual field measurements. The same basic two-dimensional axisymmetric finite-difference code was used for both calculations; however, the WES calculation had the advantage of more up-to-date soil property input and incorporated a more realistic type of mathematical constitutive model. The computed WES ground motion waveforms compared more favorably with the field measurements than did the PW results. However, both calculations correlated better with the vertical ground motion measurements than they did with the radial measurements. It was therefore concluded that the newer materfor properties used in the WES calculation provided an improved description of the Distant Plain 1A soil profile. Because of the differences in layering used in the two calculations, no definite conclusions could be drawn concerning the effect of the type of constitutive model.
|Rights:||Approved for public release; distribution is unlimited.|
|Appears in Collections:||Report|