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MARC Record
Bibliographic Data
Control Number
311522
Date and Time of Latest Transaction
20150706094352.AM
General Information
150706s |||||||||b ||00|||
Cataloging Source
STII-DOST
Local Call Number
ScienceDirect
Main Entry - Personal Name
Karinski, Y.S.
Yankelevsky, D.Z.
Feldgun, V.R.
Title Statement
Re-examination of the shock wave’s peak pressure attenuation in soils by D.Z. Yankelevsky, Y.S. Karinski and V.R. Feldgun
Physical Description
pages 864-881 computer file; text; 1,675kb
Summary, Etc.
The paper investigates the problem of a charge exploding in soil and focuses on the characteristics of the shock wave's peak pressure attenuation. Analysis of existing empirical data observes different attenuation factors for apparently similar certain types of soils whereas for other types of soils there is no significant difference. It was also observed that prediction of the shock wave's peak pressure with existing power law empirical formulas yields a large discrepancy in comparison to test data. The discrepancy is significant even in case where the specific tested soil parameters are used. These observations among others motivated this study. The power law relationship has been investigated through numerical simulations of the shock wave propagation in different soils. The soil is modeled as a bulk irreversible compressible elastic plastic medium, including full bulk locking and dependence of the current deviatoric yield stress on the pressure. The Lagrange approach and the modified variational difference methods are used to simulate the process. The study shows that the shock wave's peak pressure attenuation for certain types of soils may be well presented by a power law with a constant exponent, whereas other types of soils may be presented by a power law for a limited distance range and their behavior for a wide distance range is poorly described by a linear relationship on a logarithmic scale but is well represented by a bi-linear or a tri-linear realtionship. These findings explain some of the above mentioned observations.04
Subject Added Entry - Topical Term
Engineering04
Soils -- Analysis04
Wave propagation -- Analysis04
Engineering and manufacturing industries
Location
DOST STII ScienceDirect NONPRINTS NP 14-15569 1 14-15569 Online/Download 2012-01-12
Physical Location
Department of Science and Technology
Science and Technology Information Institute
ScienceDirect
Digital Copy
Not Available
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