| CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES |
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An improved model of damage depth of shock-melted metal in microspall under triangular wave loading |
| Wen-Bin Liu(刘文斌)1,2,3, An-Min He(何安民)2, Kun Wang(王昆)4, Jian-Ting Xin(辛建婷)5, Jian-Li Shao(邵建立)6, Nan-Sheng Liu(刘难生)1, and Pei Wang(王裴)1,2,7,† |
1 Department of Modern Mechanics, University of Science and Technology of China, Hefei 230027, China;
2 Institute of Applied Physics and Computational Mathematics, Beijing 100094, China;
3 Graduate School of China Academy of Engineering Physics, Beijing 100088, China;
4 College of Materials Science and Engineering, Hunan University, Changsha 410082, China;
5 Science and Technology on Plasma Physics Laboratory, Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China;
6 State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China;
7 Center for Applied Physics and Technology, Peking University, Beijing 100871, China |
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Abstract Damage depth is an important dynamic parameter for describing the degree of material damage and is also a key fundamental issue in the field of impact compression technology. The present work is dedicated to the damage depth of shock-melted metal in microspall under triangular wave loading, and an improved model of damage depth considering the material's compressibility and relative movement is proposed. The damage depth obtained from the proposed model is in good agreement with the laser-driven shock loading experiment. Compared with the previous model, the proposed model can predict the damage depth of shock-melted metal in microspall more accurately. Furthermore, two-groups of the smoothed particle hydrodynamics (SPH) simulations are carried out to investigate the effects of peak stress and decay length of the incident triangular wave on the damage depth, respectively. As the decay length increases, the damage depth increases linearly. As the peak stress increases, the damage depth increases nonlinearly, and the increase in damage depth gradually slows down. The results of the SPH simulations adequately reproduce the results of the proposed model in terms of the damage depth. Finally, it is found that the threshold stress criterion can reflect the macroscopic characteristics of microspall of melted metal.
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Received: 06 December 2020
Revised: 09 February 2021
Accepted manuscript online: 02 March 2021
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PACS:
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62.20.M-
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(Structural failure of materials)
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62.50.Ef
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(Shock wave effects in solids and liquids)
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62.20.mm
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(Fracture)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. U1530261 and 11572054) and the Science Challenge Project, China (Grant No. TZ2016001). |
Corresponding Authors:
Pei Wang
E-mail: wangpei@iapcm.ac.cn
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Cite this article:
Wen-Bin Liu(刘文斌), An-Min He(何安民), Kun Wang(王昆), Jian-Ting Xin(辛建婷), Jian-Li Shao(邵建立), Nan-Sheng Liu(刘难生), and Pei Wang(王裴) An improved model of damage depth of shock-melted metal in microspall under triangular wave loading 2021 Chin. Phys. B 30 096202
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