Shielding Membranes and Protection against Amplification of Reflected Waves in Bulk Media

Authors

  • Akhmetov Alfir Timirzyanovich R.R. Mavlyutov Institute of Mechanics of the Ufa Federal Research Center of the Russian Academy of Sciences (IMech UFC RAS)
  • Gizatullin Renat Fargatovich R.R. Mavlyutov Institute of Mechanics of the Ufa Federal Research Center of the Russian Academy of Sciences (IMech UFC RAS)
  • Mukhametzyanov Artur Fanilevich R.R. Mavlyutov Institute of Mechanics of the Ufa Federal Research Center of the Russian Academy of Sciences (IMech UFC RAS)
  • Valiev Azat Akhmatovich R.R. Mavlyutov Institute of Mechanics of the Ufa Federal Research Center of the Russian Academy of Sciences (IMech UFC RAS)

Keywords:

shock tube, shock wave pulse, sand fill, porosity, membrane, shielding, probing pulse, pressure peak

Abstract

Shielding a sandy bulk medium with membranes significantly alters the evolution of shock wave pulses. This paper presents the results of experimental studies of the propagation of low-amplitude shock waves in sand. The effect of the mass and shape of membranes placed on the sand surface on the dynamics of the propagation of the main and probe pulses in a compacted sandy bulk medium is studied. It is found that shielding has virtually no effect on the shape of the propagating main pulse, but it dramatically alters the shape of the transmitted probe pulses. The parameters of the resulting pulses (amplitude and steepness) depend significantly on the membrane type. The experiments were conducted on a shock tube equipped with a section of the bulk medium. doi 10.54708/19926502_2025_29411048

Author Biographies

Akhmetov Alfir Timirzyanovich, R.R. Mavlyutov Institute of Mechanics of the Ufa Federal Research Center of the Russian Academy of Sciences (IMech UFC RAS)

Candidate of Physical and Mathematical Sciences, Leading Researcher, Laboratory of Experimental Hydrodynamics, Institute of Mechanics named after R.R. Mavlyutov, Federal State Budgetary Scientific Institution, Ufa Federal Research Center of the Russian Academy of Sciences (IMech UFC RAS), Russia, 450054, Ufa, Oktyabrya Avenue, 71

Gizatullin Renat Fargatovich, R.R. Mavlyutov Institute of Mechanics of the Ufa Federal Research Center of the Russian Academy of Sciences (IMech UFC RAS)

research engineer at the Experimental Hydrodynamics Laboratory, R.R. Mavlyutov Institute of Mechanics, Ufa Federal Research Center of the Russian Academy of Sciences (IMech UFC RAS), Russia, 450054, Ufa, Oktyabrya Avenue, 71

Mukhametzyanov Artur Fanilevich, R.R. Mavlyutov Institute of Mechanics of the Ufa Federal Research Center of the Russian Academy of Sciences (IMech UFC RAS)

postgraduate student of the Experimental Hydrodynamics Laboratory, R.R. Mavlyutov Institute of Mechanics of the Ufa Federal Research Center of the Russian Academy of Sciences (IMech UFC RAS), Russia, 450054, Ufa, Oktyabrya Avenue, 71

Valiev Azat Akhmatovich, R.R. Mavlyutov Institute of Mechanics of the Ufa Federal Research Center of the Russian Academy of Sciences (IMech UFC RAS)

Junior Researcher, Experimental Hydrodynamics Laboratory, R.R. Mavlyutov Institute of Mechanics, Ufa Federal Research Center of the Russian Academy of Sciences (IMech UFC RAS), Russia, 450054, Ufa, Oktyabrya Avenue, 71

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Published

2025-25-12

Issue

Vol. 29 No. 4(110) (2025)

Section

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