Advertisement

Shock Waves pp 989-994 | Cite as

Blast wave attenuation by lightly destructable granular materials

  • V. V. Golub
  • F. K. Lu
  • S. A. Medin
  • O. A. Mirova
  • A. N. Parshikov
  • V. A. Petukhov
  • V. V. Volodin
Conference paper

Abstract

Terrorist bombings are a dismal reality nowadays. One of the most effective ways for protection against blast overpressure is the use of lightly compacted materials such as sand [1] and aqueous foam [2] as a protective envelope or barrier. According to [1], shock wave attenuation in a mine tunnel (one-dimensional case) behind a destroyed object is given by
$$ q_e\approx q\frac{1} {{1 + 4(S/q)^{1/6} b\rho _{mat} /L^{1/3} }} $$
(1)
where qe — effective charge, S — exposed area of the obstacle, q — TNT equivalent (grams), L — distance between charge and obstacle, b — obstacle thickness and ρmat — material density. This empirical equation is applicable only in a one-dimensional case but not for a less confined environment. Another way of protecting a structure against blast is to coat the surface with a sacrificial layer. In [3] full-scale experiments were carried out to investigate the behaviour of a covering of aluminum foam under the effect of a blast wave.

Keywords

Blast Wave Detonation Product Aluminum Foam Sacrificial Layer Cylinder Wall Thickness 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    G.I. Pokrovsky: Explosion. (Nedra, Moscow 1980)Google Scholar
  2. 2.
    A.A. Borisov, B.E. Gelfand, V.M. Kudinov, B.I. Palamarchuk, V.V. Stepanov, E.I. TimofeevGoogle Scholar
  3. S.V. Khomik: Shock waves in water foams. Acta Astron. 5(11–12), 1027 (1978)Google Scholar
  4. 3.
    A.G. Hanssen, L. Enstok, M. Langseth: Close-range blast loading of aluminum foam panels. Int J Impact Engg 27(11–12), 593 (2002)CrossRefGoogle Scholar
  5. 4.
    H.J. Melosh: Impact Cratering. A Geologic Process. (Oxford, New York, 1989)Google Scholar
  6. 5.
    A.N. Parshikov: Application of a solution to the Riemann problem in the SPH method. Comput Math Mathem Phys 39(7), 1216 (1999)MathSciNetzbMATHGoogle Scholar
  7. 6.
    A.N. Parshikov, S.A. Medin, I.I. Loukashenko, V.A. Milekhin: Improvements in SPH method by means of interparticle contact algorithm and analysis of perforation tests an moderate projectile velocities. Int J Impact Engg 24, 779 (2000)CrossRefGoogle Scholar
  8. 7.
    A.N. Parshikov, S.A. Medin: Smoothed particle hydrodynamics using interparticle contact algorithms. J Comput Phys 180, 358 (2002)ADSCrossRefGoogle Scholar

Copyright information

© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2005

Authors and Affiliations

  • V. V. Golub
    • 1
  • F. K. Lu
    • 2
  • S. A. Medin
    • 1
  • O. A. Mirova
    • 1
  • A. N. Parshikov
    • 1
  • V. A. Petukhov
    • 1
  • V. V. Volodin
    • 1
  1. 1.Institute for High Energy DensitiesAssociated Institute for High TemperaturesMoscowRussia
  2. 2.Aerodynamics Research CenterUniversity of Texas in ArlingtonArlingtonUSA

Personalised recommendations