Dynamic Behavior of Materials, Volume 1
Part of the series Conference Proceedings of the Society for Experimental Mechanics Series pp 259266
Equation of State of Explosive Detonation Products
 Zhao YanhongAffiliated withInstitute of Applied Physics and Computational Mathematics Email author
 , Liu HaifengAffiliated withInstitute of Applied Physics and Computational Mathematics
 , Lu GuoAffiliated withInstitute of Applied Physics and Computational Mathematics
Abstract
The equation of state (EOS) of gaseous detonation products is investigated using Ross’s modification of hardsphere variation theory and the improved onefluid van der Waals mixture model. The condensed phase of carbon is taken as a mixture of graphite, diamond, graphitelike liquid and diamondlike liquid. For a mixed system of detonation products, the free energy minimization principle is used to calculate the equilibrium compositions of detonation products by solving chemical equilibrium equations. The calculated detonation velocity and pressure of explosive are in good agreement with experimental ones. The equilibrium compositions of detonation products of PETN explosive with different densities at the ChapmanJouquet (CJ) point are computed and the results are close to those of BKW and LJD EOS. The adiabatic expansion paths from the CJ point is obtained and compared with the results of JWL EOS, it is found that the calculated value of gamma is monotonically decreasing using the presented theory in this paper, while double peaks phenomenon appears using JWL EOS.
Keywords
Equation of state Detonation products Statisticalphysical theory Chemical equilibrium Title
 Equation of State of Explosive Detonation Products
 Book Title
 Dynamic Behavior of Materials, Volume 1
 Book Subtitle
 Proceedings of the 2012 Annual Conference on Experimental and Applied Mechanics
 Pages
 pp 259266
 Copyright
 2013
 DOI
 10.1007/9781461442387_33
 Print ISBN
 9781461442370
 Online ISBN
 9781461442387
 Series Title
 Conference Proceedings of the Society for Experimental Mechanics Series
 Series ISSN
 21915644
 Publisher
 Springer New York
 Copyright Holder
 The Society for Experimental Mechanics, Inc.
 Additional Links
 Topics
 Keywords

 Equation of state
 Detonation products
 Statisticalphysical theory
 Chemical equilibrium
 Industry Sectors
 Editors

 Vijay Chalivendra ^{(ID1)}
 Bo Song ^{(ID2)}
 Daniel Casem ^{(ID3)}
 Editor Affiliations

 ID1.
 ID2. , Department of Mechanics of Materials, Sandia National Laboratories
 ID3. U.S. Army Research Laboratory
 Authors

 Zhao Yanhong ^{(1)}
 Liu Haifeng ^{(1)}
 Lu Guo ^{(1)}
 Author Affiliations

 1. Institute of Applied Physics and Computational Mathematics, 2 Fenghao East Rd, 100094, Beijing, China
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