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Chinese Journal of High Pressure Physics  > 2012  >  26(3): 294-300.
WANG Huan-Ran, WANG Yong-Gang, HE Hong-Liang. Modeling of Dynamic Tensile Fracture Accounting for Micro-Inertia Effect on Void Growth[J]. Chinese Journal of High Pressure Physics, 2012, 26(3): 294-300. doi: 10.11858/gywlxb.2012.03.008
Citation: WANG Huan-Ran, WANG Yong-Gang, HE Hong-Liang. Modeling of Dynamic Tensile Fracture Accounting for Micro-Inertia Effect on Void Growth[J]. Chinese Journal of High Pressure Physics, 2012, 26(3): 294-300. doi: 10.11858/gywlxb.2012.03.008
shu

Modeling of Dynamic Tensile Fracture Accounting for Micro-Inertia Effect on Void Growth

doi: 10.11858/gywlxb.2012.03.008
  • 1.

    Mechanics and Materials Science Research Center, Ningbo University, Ningbo 315211, China;

  • 2.

    National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, CAEP, Mianyang 621900, China

  • Received Date: 18 Oct 2010
  • Rev Recd Date: 25 Jan 2011
  • Publish Date: 15 Jun 2012
    Abstract
  • Axisymmetric unit cell model calculations are used to study void growth in a material containing a periodic array of spherical voids under different loading rate rates. Numerical results show that: Micro-inertia is found to have a strong stabilizing effect on void growth process; (2) The growth rate of void increases with the square root of mean stress; (3) Accounting for micro-inertia effect on void growth and percolation stress relaxation during the void-coalescence process, a simple dynamic damage evolution model is proposed for elastic rigid perfectly plastic materials; (4) By using of the proposed model the spall tests on copper under different impact velocities are simulated, and the numerical predictions are in good agreement with the experimental measurements, verifying the model applicability.

     

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