爆炸粉末烧结微孔隙塌缩沉能分析

王金相 李晓杰 闫鸿浩

王金相, 李晓杰, 闫鸿浩. 爆炸粉末烧结微孔隙塌缩沉能分析[J]. 高压物理学报, 2005, 19(2): 145-150 . doi: 10.11858/gywlxb.2005.02.008
引用本文: 王金相, 李晓杰, 闫鸿浩. 爆炸粉末烧结微孔隙塌缩沉能分析[J]. 高压物理学报, 2005, 19(2): 145-150 . doi: 10.11858/gywlxb.2005.02.008
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

爆炸粉末烧结微孔隙塌缩沉能分析

doi: 10.11858/gywlxb.2005.02.008
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    通讯作者:

    王金相

Analysis of Energy Deposition Caused by Micro-Void Collapse in Explosive Consolidation of Powders

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    Corresponding author: WANG Jin-Xiang
  • 摘要: 对爆炸粉末烧结过程中颗粒间的结合和沉能机制进行了分析,用反映微孔隙闭合的一维球对称塌缩模型对爆炸粉末烧结后期由微孔隙闭合引起的沉能现象进行了研究。在球对称塌缩一维流动的控制方程中引入传热项的影响,采用刚塑性假设并引入热粘塑性本构关系,利用有限差分法对球壳收缩过程中的温度分布进行了计算。结果表明:热传导的影响随孔隙尺度的变小而变大;球壳收缩过程中其内壁经历了从弹塑性体到流体的转变,其温升远高于其它部位的温升,其它部位较低的温度将对熔化的球心起到低温淬火作用。

     

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出版历程
  • 收稿日期:  2004-06-04
  • 修回日期:  2004-11-03
  • 发布日期:  2005-06-05

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