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《Journal of Vibration and Shock》 2007-08
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SIMULATION OF MICRO VOID EVOLUTION IN THE PURE ALUMINUM UNDER DYNAMIC LOADING

QI Mei-lan1,2 HE Hong-liang2 WANG Yong-gang2 YAN Shi-lin1(1.School of Science, Wuhan University of Technology, wuhan 430070, China; 2.Laboratory for Shock Wave and Detonation Physics Research, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang, Sichuan 621900, China)  
The dynamic evolution of micro void under different loading conditions was calculated by use of two-dimensional program LS-DYNA. The Result shows, under low impact velocity, the initial void is first compressed by the shock wave, and nearly closes. After that, the void grows bigger and bigger under the effect of tension stress due to reflection wave. The void nearly keeps a circular shape during the growth, but the shape will change with time because of the shear strain. Under higher impact velocity, the collapse of the void will occur during the process of void closing. The change curve of void after shocked by the flyer is also plotted. It is hard to observe these appearing and resulting in the experiment. The results are helpful to study the fracture of the material with voids under dynamic loading.
【Fund】: 国家自然科学基金NSAF项目(10476027)
【CateGory Index】: O347.3
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【Co-citations】
Chinese Journal Full-text Database 6 Hits
1 ZHU Chun-zhang(Department of Material Engineering,Nanjing Institute of Technology,Nanjing 210013,China);Molecular Dynamics Simulation of the Effect of Grain Boundary upon Vacancy Growth in Copper Nano-crystal[J];Journal of Materials Science and Engineering;2005-05
2 CUI Xin-Lin1,2,LI Ying-Jun1,ZHU Wen-Jun2,QI Mei-Lan3, WANG Hai-Yan2,HE Hong-Liang2,LIU Jian-Jun4(1.School of Mechanics and Civil Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China;2.National Key Laboratory of Shock Wave and Detonation Physics,Institute of Fluid Physics,CAEP,Mianyang 621900,China;3.School of Science,Wuhan University of Technology,Wuhan 430070,China;4.School of Science,Beijing University of Chemical Technology,Beijng 100029,China);Micro-Analysis of the Void Growth of Aluminum under Shock Loading[J];Chinese Journal of High Pressure Physics;2009-01
3 WU Xiaomin, MA Gang, XIA Yuanming The Key Laboratory of Mechanical Behavior and Design of Materials, CAS, Department of Mechanics and Mechanical Engineering, University of Science and Technology of China, Hefei 230027;PROPAGATION OF ELASTIC WAVE IN SINGLE-CRYSTAL NANO COPPER BAR[J];Acta Metallrugica Sinica;2005-10
4 HU Jinghua1,QI Meilan1,2(1.School of Science,Wuhan University of Technology,Wuhan 430070,Hubei,China;2.Institute of Fluid Physics,China Academy of Engineering Physics,Mianyang 621900,Sichuan,China);Numerical Simulation of Micro Void Collapse in the Pure Aluminum under the Shock Compression[J];Journal of Wuhan University(Natural Science Edition);2009-04
5 Luo Jin~1)2) Zhu Wen-Jun~2)3) Lin Li-Bin~1) He Hong-Liang~2) Jing Fu-Qian~2)3) ~ ~1) (Department of Physics, Sichuan Univeristy, Chengdu 610064, China) ~ ~2) (Lab of Shock Wave and Detonation Physics, Institute of Fluid Physics, CAEP, Mianyang 621900, China) ~ ~3) (Center of High Pressure Physics Research, Sichuan Normal University, Chengdu 610068, China);Molecular dynamics simulation of void growth in single crystal copper under uniaxial impacting[J];Acta Physica Sinica;2005-06
6 Wang Hai-Yan~ 1)2)3) Zhu Wen-Jun~ 1)3) Deng Xiao-Liang~ 1) Song Zhen-Fei~ 1) Chen Xiang-Rong~ 3) 1)(National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, Mianyang 621900, China)2)(College of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454000,China)3)(College of Physical Science and Technology, Sichuan University, Chengdu 610064, China);Plastic deformation of helium bubble and void in aluminum under shock loading[J];Acta Physica Sinica;2009-02
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