Porous materials under shock loading as a two-phase mixture: the effect of the interstitial air

[+] Author and Article Information
Anatoly Resnyansky

WCSD, Defence Science and Technology Group, Edinburgh, SA 5111, Australia

1Corresponding author.

ASME doi:10.1115/1.4038398 History: Received December 01, 2016; Revised July 27, 2017


Deformation and mixing of solid particles in porous materials are typical consequences under shock compression and are usually considered as the major contributors to energy dissipation during shock compression while a contribution from the interaction between the solid and gaseous phases attracts less attention. The present work illustrates the phase interaction process by meso-mechanical hydrocode modeling under different conditions of the interstitial gaseous phase. A two-phase analytical approach focusing on the role of thermal non-equilibrium between the phases and an advanced two-phase model complement the meso-mechanical analysis by demonstrating a similar trend due to the effect of pressure in the interstitial air.

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