Hugoniot equation of state of rock materials under shock compression

Q. B. Zhang, C. H. Braithwaite, J. Zhao

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Abstract

Two sets of shock compression tests (i.e. conventional and reverse impact) were conducted to determine the shock response of two rock materials using a plate impact facility. Embedded manganin stress gauges were used for the measurements of longitudinal stress and shock velocity. Photon Doppler velocimetry was used to capture the free surface velocity of the target. Experimental data were obtained on a fine-grained marble and a coarse-grained gabbro over a shock pressure range of approximately 1.5-12 GPa. Gabbro exhibited a linear Hugoniot equation of state (EOS) in the pressure-particle velocity (P-up) plane, while for marble a nonlinear response was observed. The EOS relations between shock velocity (US) and particle velocity (up) are linearly fitted as US =2.62+3.319up and US =5.4 85+1.038up for marble and gabbro, respectively.

Original languageEnglish
Article number20160169
Number of pages13
JournalPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
Volume375
Issue number2085
DOIs
Publication statusPublished - 28 Jan 2017

Keywords

  • Dynamic loading
  • Equation of state
  • Plate impact
  • Rock materials
  • Shock compression
  • Strain rate

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