Chen, G. Q. and Ahrens, T. J. and Yang, W. and Knowles, J. K. (1999) Effect of irreversible phase change on shock-wave propagation. Journal of the Mechanics and Physics of Solids, 47 (4). pp. 763-783. ISSN 0022-5096. doi:10.1016/S0022-5096(98)00090-8. https://resolver.caltech.edu/CaltechAUTHORS:20141021-124357929
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Abstract
New release adiabat data for vitreous GeO_2 are reported up to ∼25 GPa using the VISAR technique. Numerical modeling of isentropic release wave induced dynamic states achieved from one dimensional strain–stress waves is consistent with a phase change that induce an increase in zero-pressure density from 3.7–6.3 Mg/m^3 starting at ∼8 GPa. The first release adiabat data for SiO_2 ( fused quartz) are presented (obtained with immersed foil technique) . Above 10 GPa, the SiO_2 release isentropes, in analogy with GeO_2, are steeper than the Hugoniot in the volume-pressure space, indicating the presence of an irreversible phase transition (to a stishovite-like phase). We simulate propagation of shock-waves in GeO_2, in spherical and planar symmetries, and predict enhanced attenuation for shock pressures ( p) above the phase change initiation pressure (8 GPa) . The pressure from a spherical source decays with propagation radius r, p ∼ r^x, where x is the decay coefficient. Modeling hysteresis of the phase change gives x = −2.71, whereas without the phase change, x = −1.15. An analytical model is also given.
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Additional Information: | © 1999 Elsevier Science Ltd. Received 14 May 1997; in revised form 21 July 1998. This material is based upon work supported by, or in part by, the U.S. Army Research Office under Contract/Grant No. DAAH04-94-G0063. Contribution No. 5780, Division of Geological and Planetary Sciences, California Institute of Technology. | |||||||||
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Subject Keywords: | phase transformation; constitutive behavior; biological material; polycrystalline material; porous material; rock; stress waves; optical interferometry | |||||||||
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Issue or Number: | 4 | |||||||||
DOI: | 10.1016/S0022-5096(98)00090-8 | |||||||||
Record Number: | CaltechAUTHORS:20141021-124357929 | |||||||||
Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20141021-124357929 | |||||||||
Official Citation: | Chen, G. Q., Ahrens, T. J., Yang, W., & Knowles, J. K. (1999). Effect of irreversible phase change on shock-wave propagation. Journal of the Mechanics and Physics of Solids, 47(4), 763-783. doi: http://dx.doi.org/10.1016/S0022-5096(98)00090-8 | |||||||||
Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
ID Code: | 50619 | |||||||||
Collection: | CaltechAUTHORS | |||||||||
Deposited By: | INVALID USER | |||||||||
Deposited On: | 21 Oct 2014 22:21 | |||||||||
Last Modified: | 10 Nov 2021 18:58 |
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