Behaviour of moist and saturated sand during shock and release
Applied Physics Letters
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Perry, J., Braithwaite, C., Taylor, N., & Jardine, A. (2015). Behaviour of moist and saturated sand during shock and release. Applied Physics Letters, 107 (174102)https://doi.org/10.1063/1.4934689
Relatively little is known about the changes that occur in the shock compaction and release of granular matter with varying levels of moisture. Here, we report a series of plate impact experiments giving shock Hugoniot and release data for a well characterized sand at dry, 10% moist and saturated water contents. The results reveal that at low moisture content the shock impedance is slightly reduced, while the release remains predominantly inelastic. Close to saturation, much more substantial changes occur: the shock impedance stiffens substantially, the Hugoniot appears to split into two branches, and the release becomes almost completely elastic. We discuss mechanisms underpinning these changes in behavior.
This work was supported through the Force Protection Engineering research programme led by QinetiQ Plc. on behalf of DSTL.
External DOI: https://doi.org/10.1063/1.4934689
This record's URL: https://www.repository.cam.ac.uk/handle/1810/251371