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Abstract

By means of a single void growth model, finite element simulations of incipient spallation experiments of high-purity aluminum under different plate impact velocities are carried out. The relationship between the influence of void growth in the sample on wave propagation and the feature of free surface velocity profile is discussed. By analyzing the change of stress field around the void, the occurrence of pullback signal in free surface velocity profiles is attributed to the local unloading wave effect caused by void growth in the sample, which cannot indicate the whole spallation of materials. Free surface velocity profiles and relative void volumes are simulated for different impact velocities and the simulation results are in good agreement with experimental results, which indicates that the stochastic damage evolution in incipiently spalled sample can be described by a single void growth in cell model.

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[2]	Lin Qian, Xie Pu-Chu, Hu Jian-Bo, Zhang Feng-Guo, Wang Pei, Wang Yong-Gang.Numerical simulation on dynamic damage evolution of high pure copper with different grain sizes. Acta Physica Sinica, 2021, 70(20): 204601.doi:10.7498/aps.70.20210726
[3]	Zhang Feng-Guo, Liu Jun, He An-Min, Wang Pei, Wang Kun, Zhou Hong-Qiang, Zhao Fu-Qi.Method of determining parameters of void growth damage model and its application to simulation of spall test. Acta Physica Sinica, 2020, 69(20): 204601.doi:10.7498/aps.69.20200527
[4]	Zhu Qi, Wang Sheng-Tao, Zhao Fu-Qi, Pan Hao.Effect of stacking fault tetrahedron on spallation of irradiated Cu via molecular dynamics study. Acta Physica Sinica, 2020, 69(3): 036201.doi:10.7498/aps.69.20191425
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[8]	Pei Xiao-Yang, Peng Hui, He Hong-Liang, Li Ping.Discussion on the physical meaning of free surface velocity curve in ductile spallation. Acta Physica Sinica, 2015, 64(3): 034601.doi:10.7498/aps.64.034601
[9]	Yu Yin, He Hong-Liang, Wang Wen-Qiang, Lu Tie-Cheng.Shock response and evolution mechanism of brittle material containing micro-voids. Acta Physica Sinica, 2014, 63(24): 246102.doi:10.7498/aps.63.246102
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[11]	Zhang Feng-Guo, Zhou Hong-Qiang.Effects of grain size on the dynamic tensile damage of ductile polycrystalline metall. Acta Physica Sinica, 2013, 62(16): 164601.doi:10.7498/aps.62.164601
[12]	Chen Yong-Tao, Tang Xiao-Jun, Li Qing-Zhong.Phase transition and influence of phase transitionon spall in α phase Fe-based alloy. Acta Physica Sinica, 2011, 60(4): 046401.doi:10.7498/aps.60.046401
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[18]	Deng Xiao-Liang, Zhu Wen-Jun, He Hong-Liang, Wu Deng-Xue, Jing Fu-Qian.Initial dynamic behavior of nano-void growth in single-crystal copper under shock loading along 〈111〉 direction. Acta Physica Sinica, 2006, 55(9): 4767-4773.doi:10.7498/aps.55.4767
[19]	Luo Jin, Zhu Wen-Jun, Lin Li-Bin, He Hong-Liang, Jing Fu-Qian.Molecular dynamics simulation of void growth in single crystal copper under uniaxial impacting. Acta Physica Sinica, 2005, 54(6): 2791-2798.doi:10.7498/aps.54.2791
[20]	Yu Dong-Liang, Yang Shao-Guang, Dou You-Wei.. Acta Physica Sinica, 2002, 51(8): 1784-1787.doi:10.7498/aps.51.1784

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Vol. 60, Issue 12 - 2011-06-20

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