有机玻璃裂纹扩展双参量驱动力模型

宋全超 张建国 乙晓伟 王泓

宋全超, 张建国, 乙晓伟, 王泓. 有机玻璃裂纹扩展双参量驱动力模型[J]. 航空材料学报, 2011, 31(4): 86-89.
引用本文: 宋全超, 张建国, 乙晓伟, 王泓. 有机玻璃裂纹扩展双参量驱动力模型[J]. 航空材料学报, 2011, 31(4): 86-89.
SONG Quan-chao, ZHANG Jian-guo, YI Xiao-wei, WANG Hong. Model of Two-parameter Driving Force for Fatigue Crack Growth of PMMA[J]. Journal of Aeronautical Materials, 2011, 31(4): 86-89.
Citation: SONG Quan-chao, ZHANG Jian-guo, YI Xiao-wei, WANG Hong. Model of Two-parameter Driving Force for Fatigue Crack Growth of PMMA[J]. Journal of Aeronautical Materials, 2011, 31(4): 86-89.

有机玻璃裂纹扩展双参量驱动力模型

详细信息
    作者简介:

    宋全超(1984- )男,硕士研究生,主要从事材料的疲劳与断裂研究,(E-mail)quancha02010@163.com.

  • 中图分类号: V223;V215.5

Model of Two-parameter Driving Force for Fatigue Crack Growth of PMMA

  • 摘要: 测定了定向有机玻璃YB-DM-11在应力比R=-0.4,0.1和0.4下的中部区和加速扩展区的裂纹扩展速率。将适用于金属材料的双参量裂纹扩展驱动力模型K*=(Kmax)α(ΔK+)1-α引入到有机玻璃裂纹扩展行为研究。对于有机玻璃,双参量裂纹扩展驱动力模型中的相关参数α并非定值,是与应力比、断裂韧度、应力场强度因子和裂纹扩展速率趋于无穷大时双参量动力模型中相关参数αb有关的函数。在一定应力比范围内,得到基于双参量动力模型的疲劳裂纹扩展速率通用表达式,能很好地表征不同应力比下的疲劳裂纹扩展行为,表明了应力比对有机玻璃疲劳裂纹扩展速率中部区和加速区的影响。

     

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出版历程
  • 收稿日期:  2010-09-20
  • 修回日期:  2011-02-02
  • 刊出日期:  2011-08-01

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