. Dynamic behaviour of dry and water-saturated sand under planar shock conditions. International Journal of Impact Engineering, Elsevier, 2009, 37 (1), pp. This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. M A N U S C R I P T A C C E P T E D ARTICLE IN PRESS ___________________________________________________________________________ AbstractPlane shock wave experiments were performed on dry and partially water-saturated sand, using three water contents, in order to validate predictive models of material behaviour at stress levels between 1 and 10 GPa. Gas and powder guns were used to load the sample under uni-axial strain conditions at low and high stress levels, respectively. Wave motions were detected by piezoelectric pins in the samples and a VISAR (Velocity Interferometer System for Any Reflector) recorded the free surface velocity on the back target. This study presents both experimental and simulated results. Experimental data are used to determine shock Hugoniot states. Significant differences are observed in the dynamic response of the materials under various water-saturated conditions, and are reproduced with good agreement by numerical simulations using the ARMORS (A Rheological MOdel of Rocks Saturated) model.
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