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描述低周疲劳裂纹扩展速率的循环J积分新参量

胡宏玖 郭兴明 李培宁 谢禹钧 李洁

胡宏玖, 郭兴明, 李培宁, 谢禹钧, 李洁. 描述低周疲劳裂纹扩展速率的循环J积分新参量[J]. 应用数学和力学, 2006, 27(2): 134-143.
引用本文: 胡宏玖, 郭兴明, 李培宁, 谢禹钧, 李洁. 描述低周疲劳裂纹扩展速率的循环J积分新参量[J]. 应用数学和力学, 2006, 27(2): 134-143.
HU Hong-jiu, GUO Xing-ming, LI Pei-ning, XIE Yu-jun, LI Jie. New Cyclic J-Integral for Low-Cycle Fatigue Crack Growth[J]. Applied Mathematics and Mechanics, 2006, 27(2): 134-143.
Citation: HU Hong-jiu, GUO Xing-ming, LI Pei-ning, XIE Yu-jun, LI Jie. New Cyclic J-Integral for Low-Cycle Fatigue Crack Growth[J]. Applied Mathematics and Mechanics, 2006, 27(2): 134-143.

描述低周疲劳裂纹扩展速率的循环J积分新参量

基金项目: 上海市重点学科建设资助项目(Y0103)
详细信息
    作者简介:

    胡宏玖(1969- ),男,江西赣州人,副研究员,博士(联系人.Tel/Fax:+86-21-56338345;E-mail:huhongjiu@163.com).

  • 中图分类号: O346.2

New Cyclic J-Integral for Low-Cycle Fatigue Crack Growth

  • 摘要: 探讨了低周疲劳加载条件下的应力增量-应变增量关系,提出了模拟裂纹疲劳扩展的二维模型以建立新的循环J积分参量,详细阐述了该积分参量的定义、主要特点、物理意义以及数值计算方法,并通过紧凑拉伸试样的疲劳试验检验该积分参量的有效性.结果表明:该积分参量能够较好描述恒幅低周疲劳裂纹的扩展速率.此外,基于积分参量体系,从能量的角度解释了疲劳迟滞现象.
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出版历程
  • 收稿日期:  2005-08-23
  • 修回日期:  2005-10-17
  • 刊出日期:  2006-02-15

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