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Chinese Journal of High Pressure Physics  > 2005  >  19(2): 145-150 .
WANG Jin-Xiang, LI Xiao-Jie, YAN Hong-Hao. Analysis of Energy Deposition Caused by Micro-Void Collapse in Explosive Consolidation of Powders[J]. Chinese Journal of High Pressure Physics, 2005, 19(2): 145-150 . doi: 10.11858/gywlxb.2005.02.008
Citation: WANG Jin-Xiang, LI Xiao-Jie, YAN Hong-Hao. Analysis of Energy Deposition Caused by Micro-Void Collapse in Explosive Consolidation of Powders[J]. Chinese Journal of High Pressure Physics, 2005, 19(2): 145-150 . doi: 10.11858/gywlxb.2005.02.008
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Analysis of Energy Deposition Caused by Micro-Void Collapse in Explosive Consolidation of Powders

doi: 10.11858/gywlxb.2005.02.008

  • Department of Engineering Mechanics of Dalian University of Technology, State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian 116023, China

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  • Corresponding author: WANG Jin-Xiang
  • Received Date: 04 Jun 2004
  • Rev Recd Date: 03 Nov 2004
  • Issue Publish Date: 05 Jun 2005
    Abstract
  • In this paper, the mechanism of distortion and energy deposition at the interface of the particles in explosive consolidation of powders is analyzed. A one-dimension model of spherical symmetry is used to describe the closure of the micro-holes in powders. Effect of heat conduction is added to the one-dimensional flow equations of spherical symmetry, and the temperature distribution during the closure of the hollow sphere is solved by finite-difference under the condition that the material is rigid-plastic fluid and the constitutive equations are thermo-visco-plastic. The results show that effect of heat conduction becomes more remarkable when the scale of the holes become small; during the closure of the holes the state of the interior surface changes from elastic-plastic to fluid, and its temperature is much higher than other part of the spherical shell.

     

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