| Original Articles |
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Analytical Method to Evaluate Hugoniot of Metallic Materials with Different Initial Temperatures |
| WANG Qing-Song, LAN Qiang, HU Jian-Bo, WU Jing, DAI Cheng-Da |
| Laboratory for Shock Wave and Detonation Physics Research, Institute of Fluid Physics, Chinese Academy of Engineering Physics, Mianyang 621900 |
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| Cite this article: |
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WANG Qing-Song, LAN Qiang, HU Jian-Bo et al 2008 Chin. Phys. Lett. 25 4219-4222 |
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Abstract An analytical method is proposed to evaluate the Hugoniot parameters of preheated metallic materials by relating to its principal Hugoniot. Modelling calculations for 1100 Al, Cu and Ta show that the preheating lowers to a certain extent the shock impedance and the degree of lowering the shock impedance increases with increasing preheating temperature. The Hugoniots of 6061-T6 Al and TC4 preheated flyers at known preheating temperatures are evaluated, and are utilized to calculate the particle velocity and shock pressure using the impedance-match method based on the measured shock wave velocity and impact velocity reported in Z pinch-driven and three-stage gun-driven Hugoniot experiments. The presented method allows a reasonable evaluation for Hugoniot of the preheated metallic flyers.
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| Keywords:
05.70.Ce
41.75.Lx
44.05.+e
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Received: 13 June 2008
Published: 27 November 2008
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| PACS: |
05.70.Ce
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(Thermodynamic functions and equations of state)
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41.75.Lx
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(Other advanced accelerator concepts)
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44.05.+e
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(Analytical and numerical techniques)
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