A method to acquire different blast waves is proposed. The geometrical models of the loading area of shock wave and air basin are established using SolidWorks, and then are divided to the structured grids by using Hypermesh. Material parameters and equation of state are assigned to the model. The curve of internal energy per unit volume and time is calculated with FORTRAN program and revised with the modified formula, then imported into the loading area of shock wave. The required shock wave is acquired by use of finite element program LS-DYNA. The proposed method can used to simulate the dif-ferentblast waves with error of 1.0%. The method provides an effective route for research on blast injury.
Key words
explosion mechanics /
shock wave /
numerical simulation /
blast injury
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References
［1］ StuhmillerJ H. Biological response to blast overpressure: a summary of modeling[J]. Toxicology, 1997, 121(33):91-103.
[2] StuhmillerJ H, Ho K,Vorst M. A model of blast overpressure injury to the lung[J]. Journal of Biomechanics, 1996, 29(2):227-234.
[3] BowenI G, Fletcher E R, Richmond D R. Estimate of man's toleranceto the direct effects of air blast, DASA-2113 [R].Washington,DC: Defense Atomic Support Agency, 1968.
[4] ArgyrosG J. Management of primary blast injury [J]. Toxicology, 1997, 121(1): 105-115.
[5] FernandoD A, Enrique G F, Marta D M, et al. Consequence analysis by means of characteristic curves to determine the damage to humans from the detonation of explosive substances as a function of TNT equivalence[J]. Journal of Loss Prevention in the Process Industries, 2008, 20(1):74-81.
[6] JohanssonC H, Person P A. Demonic of high explosives[M]. New York: Academic Press, 1970.
[7] KinneyG F. Explosive shocks in air[M]. New York:The Macmillan Company,1962.
[8] LS-DYNAkey word user’s manual[EB].Livermore, CA: Livermore Software Technology Corporation, 2003.
[9] GreerA D. Numerical modeling for the prediction of primary blast injury to the lung[D]. Canada:University of Waterloo, 2005.
[10] ThomC G. Soft materials under air blast loading and their effect on primary blast injury[D].Canada:, University of Waterloo, 2009.
[11] WuC, Hao H. Modeling of simultaneous ground shock and air blast pressure on nearby structures from surface explosions[J]. International Journal of Impact Engineering, 2005, 31(6): 699-717.
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Footnotes
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