High strain rate response of an elastomer |
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| Authors: | Satish C Guptat Y M Gupta |
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| Institution: | 1. Shock Dynamics Laboratory , Washington State University Pullman , WA, 99164-2814, U.S.A.;2. High Pressure Physics Division , Bhabha Atomic Research Centre , Bombay, 400085, India;3. Shock Dynamics Laboratory , Washington State University Pullman , WA, 99164-2814, U.S.A. |
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| Abstract: | Abstract Plate impact experiments have been performed to examine the high strain rate response of an elastomer (explosive binder) shocked to 8 kbar stress. Particle velocity data have been obtained using in-material electromagnetic velocity gauges. Normal impact experiments have provided compression and release wave velocities and stress-strain results; ramp wave experiments indicate that the elastomer response is independent of loading rate; inclined plate impact measurements show that the material does not support any shear even at these strain rates. Additionally, numerical simulations have been performed to show that shock propagation in viscous fluids canbe simulated without artificial viscosity but by using the material viscosity in the constitutive relations. Such simulations will be useful in obtaining material viscosities from the measured wave profiles. |
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| Keywords: | Shock wave elastomer viscosity |
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