Microscopic and macroscopic numerical simulation on interaction between stress wave and flaw

Guo Zhao-liang; Ren Guo-wu; Tang Tie-gang; Liu Cang-li

doi:10.11883/1001-1455(2014)01-0052-07

Volume 34 Issue 1

Mar. 2014

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Guo Zhao-liang, Ren Guo-wu, Tang Tie-gang, Liu Cang-li. Microscopic and macroscopic numerical simulation on interaction between stress wave and flaw[J]. Explosion And Shock Waves, 2014, 34(1): 52-58. doi: 10.11883/1001-1455(2014)01-0052-07

Citation:

Guo Zhao-liang, Ren Guo-wu, Tang Tie-gang, Liu Cang-li. Microscopic and macroscopic numerical simulation on interaction between stress wave and flaw[J]. Explosion And Shock Waves, 2014, 34(1): 52-58. doi: 10.11883/1001-1455(2014)01-0052-07

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Microscopic and macroscopic numerical simulation on interaction between stress wave and flaw

doi: 10.11883/1001-1455(2014)01-0052-07

National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621999, Sichuan, China

Funds: Supported by the National Natural Science Foundation of China (11172279)

Received Date: 2012-07-12
Rev Recd Date: 2012-09-05
Publish Date: 2014-01-25

Abstract

Abstract

The finite element program LS-DYNA3D and the molecular dynamic method were applied to investigate the plastic zone formation, evolution process and the consequent dynamic failure behaviors under the dynamic tensile loading in a metal sheet with a preset flaw at macroscopic and microscopic levels, respectively.The calculated results show that the formation of the plastic zone stems from the stress wave-flaw and stress wave-stress wave interactions.The macroscopic and microscopic simulations represent the similar physical characteristics:the crack initiates at the front of the flaw boundary, then connects with the flaw and eventually leads to the global failure.
- solid mechanics,
- plastic zone formation,
- LS-DYNA3D,
- metal sheet with a preset flaw,
- stress wave,
- molecular dynamic method

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References(22)

References

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