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Control Number311522
Date and Time of Latest Transaction20150706094352.AM
General Information150706s |||||||||b ||00|||
Cataloging SourceSTII-DOST
Local Call NumberScienceDirect
Main Entry - Personal NameKarinski, Y.S.
 Yankelevsky, D.Z.
 Feldgun, V.R.
Title StatementRe-examination of the shock wave’s peak pressure attenuation in soils by D.Z. Yankelevsky, Y.S. Karinski and V.R. Feldgun
Physical Descriptionpages 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 TermEngineering04
 Soils -- Analysis04
 Wave propagation -- Analysis04
 Engineering and manufacturing industries
LocationDOST STII ScienceDirect NONPRINTS NP 14-15569 1 14-15569 Online/Download 2012-01-12
 
     
 
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