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Author:

李晓延 (李晓延.) | 朱鸿官 (朱鸿官.) | 田锡唐 (田锡唐.)

Indexed by:

CQVIP CSCD

Abstract:

焊接接头疲劳裂纹的扩展过程中存在着闭合现象.本文提出了考虑到宏观力学不均匀性时焊接接头的实验及数值分析模型,通过实验及弹塑性有限元法研究了焊接接头疲劳裂纹扩展及闭合现象,分析了裂纹尖端应力分布的变化.结果表明,焊接接头疲劳裂纹的扩展受裂纹闭合的影响,加载过程中裂纹尖端应力过零时对应的外载可作为裂纹张开载荷Pop.同时讨论了力学不均匀性影响疲劳裂纹扩展的本质.

Keyword:

裂纹扩展 疲劳 焊接接头 裂纹闭合

Author Community:

  • [ 1 ] 北京工业大学材料科学与工程学院 北京
  • [ 2 ] 100022
  • [ 3 ] 哈尔滨工业大学焊接教研室 哈尔滨
  • [ 4 ] 150006

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Source :

北京工业大学学报

Year: 1998

Issue: 03

Page: 50-54

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 3

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