Shock tube study of the dynamical behavior of granular materials

A. Britan, G. Ben-Dor

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

The purpose of the present study is to clarify both the compression phenomenon and the gas filtration effect that take place inside a granular medium when it is dynamically loaded by a shock wave. In order to measure the pore pressure and the total stress at different locations along the granular medium, pressure transducers were placed along the side-wall and at the end-wall of the shock tube test section, which was filled with the granular material. In order to elucidate the gas filtration effect, the results of two experiments with identical granular media but with and without filtration were compared. The gas filtration was eliminated by means of a thin plastic film, which was placed at the front edge of the granular medium. Based on this comparison quantitative information on the gas filtration and its role in the stress formation inside granular media of different material and length was obtained. Furthermore, curves of the dynamic compression and the Young moduli of the granular medium for the range of the operating conditions were reconstructed.

Original languageEnglish
Pages (from-to)623-642
Number of pages20
JournalInternational Journal of Multiphase Flow
Volume32
Issue number5
DOIs
StatePublished - 1 May 2006

Keywords

  • Cellular materials
  • Compaction waves
  • Filtration
  • Granular materials
  • Pressure loading

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