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| Material dynamic response analysis under complex loading using backward integration method |
| Received:May 15, 2012 Revised:September 18, 2012 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx201306007 |
| KeyWord:complex loading backward integration method numerical computation graded density impactor |
| Author | Institution |
| 张红平 |
中国工程物理研究院 流体物理研究所, 绵阳 |
| 柏劲松 |
中国工程物理研究院 流体物理研究所, 绵阳 |
| 王刚华 |
中国工程物理研究院 流体物理研究所, 绵阳 |
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| Abstract: |
| In complex loading experiments of graded density impactor,shock loading-ramp loading -ramp unloading metal aluminum experiment was analyzed.Different mechanical response relations were used for different loading path.From velocity profiles in interface between Al sample and LiF window material,sample interior information were calculated using backward integration method.Numerical results show that calculated loading velocity and loading pressure appear to be in good agreement with the forward integration results.The inner energy,temperature,Lagrangian sound speed and strain rate in loading surface of Al are discussed.The P-V reference curve also is provided for equation of state research.The numerical results make a check on forward calculating data. |