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带裂纹三点弯曲试样的动态应力强度因子分析

陈爱军 曹俊俊

陈爱军, 曹俊俊. 带裂纹三点弯曲试样的动态应力强度因子分析[J]. 应用数学和力学, 2011, 32(2): 194-201. doi: 10.3879/j.issn.1000-0887.2011.02.007
引用本文: 陈爱军, 曹俊俊. 带裂纹三点弯曲试样的动态应力强度因子分析[J]. 应用数学和力学, 2011, 32(2): 194-201. doi: 10.3879/j.issn.1000-0887.2011.02.007
CHEN Ai-jun, CAO Jun-jun. Analysis of Dynamic Stress Intensity Factors of Three-Point Bend Specimen Containing Crack[J]. Applied Mathematics and Mechanics, 2011, 32(2): 194-201. doi: 10.3879/j.issn.1000-0887.2011.02.007
Citation: CHEN Ai-jun, CAO Jun-jun. Analysis of Dynamic Stress Intensity Factors of Three-Point Bend Specimen Containing Crack[J]. Applied Mathematics and Mechanics, 2011, 32(2): 194-201. doi: 10.3879/j.issn.1000-0887.2011.02.007

带裂纹三点弯曲试样的动态应力强度因子分析

doi: 10.3879/j.issn.1000-0887.2011.02.007
基金项目: 中国一航航空推进技术验证计划(APTD-1104-02);南京理工大学自主科研专项计划(2010GJPY026)资助
详细信息
    作者简介:

    陈爱军(1972- ),男,江西人,副教授,博士(联系人.E-mail:chen721010@sina.com).

  • 中图分类号: O346.1; O347.1

Analysis of Dynamic Stress Intensity Factors of Three-Point Bend Specimen Containing Crack

  • 摘要: 提出了计算带单边裂纹三点弯曲试样动态应力强度因子的新方法.首先由权函数的普遍形式和两种参考载荷下的应力强度因子,得到了带单边裂纹三点弯曲试样的权函数,然后考虑试样的转动惯性和剪切变形,根据振动理论推导出无裂纹梁内的动应力响应和分布,最后由权函数的思想推导出了带裂纹三点弯曲试样动态应力强度因子公式.通过有限元数值计算,验证了该方法的正确性,结果比较表明公式具有较高的精度.另外,还研究了冲击载荷下三点弯曲试样的动态应力强度因子随裂纹长度和加载速率的变化规律.
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出版历程
  • 收稿日期:  2010-07-29
  • 修回日期:  2010-12-28
  • 刊出日期:  2011-02-15

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