Constitutive modeling of Hugoniot for a highly porous material
This paper studies the constitutive behavior of highly porous materials subject to shock wave loading. A two-phase model accounting for the interphase heat transfer is suggested and employed. Experimental shock velocity data, widely available in literature, are used for the purpose of model validati...
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| Published in | Journal of applied physics Vol. 104; no. 9; pp. 093511 - 093511-14 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
Crown copyright
01.11.2008
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| Online Access | Get full text |
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| Summary: | This paper studies the constitutive behavior of highly porous materials subject to shock wave loading. A two-phase model accounting for the interphase heat transfer is suggested and employed. Experimental shock velocity data, widely available in literature, are used for the purpose of model validation. The importance of the nonequilibrium Hugoniot analysis is demonstrated. It is argued that the apparent anomalous behavior of the experimental Hugoniots for a highly porous material is closely associated with the thermal interphase nonequilibrium. In particular, an experimental copper powder Hugoniot correlates with a composite curve constructed from a fragment of the pressure-temperature equilibrium Hugoniot at pressures below 40 GPa and from a fragment of the pressure equilibrium Hugoniot at higher pressures. |
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| ISSN: | 0021-8979 1089-7550 |
| DOI: | 10.1063/1.2993548 |