疲劳短裂纹扩展描述方法

广东工业大学学报 ›› 2005, Vol. 22 ›› Issue (3): 25-28.

疲劳短裂纹扩展描述方法

广东工业大学机电工程学院；广东工业大学机电工程学院广东广州510090；广东广州510090；

出版日期:2005-07-02 发布日期:2005-07-02

A Description of Propagation of Short Fatigue Crack

(Faculty of Electronmechanical Engineering,Guangdong University of Technology,Guangzhou 510090,China)

Online:2005-07-02 Published:2005-07-02

摘要/Abstract

摘要： 提出了以裂纹顶端延伸位移幅度为驱动力参量的疲劳短裂纹扩展速率描述方法,在小变形情况下与Nisitani方程是一致的.以正火15MnVNq钢试验数据进行了验证,对疲劳短裂纹扩展速率描述结果表明,该方法是合理有效的.

关键词: 疲劳短裂纹；扩展速率；裂纹顶端延伸位移；

Abstract: The crack-tip extension displacement range is utilized to describe the rate of short fatigue crack propagation.The test result of normalized 15MnVNq shows that the proposed method is effective and accurate.

Key words: short fatigue crack； propagation rate； crack-tip extension displacement；

吕文阁；骆少明； . 疲劳短裂纹扩展描述方法[J]. 广东工业大学学报, 2005, 22(3): 25-28.

LV Wen-ge,LUO Shao-ming. A Description of Propagation of Short Fatigue Crack[J]. Journal of Guangdong University of Technology, 2005, 22(3): 25-28.

参考文献

[1] Hobson P D.The formulation of a crack growth equation for short cracks. Fatigue and Fracture of Engineering Materials and Structures . 1982

[2] Eshelby J D.The determination of the elastic of an ellipsoidal inclusion and related problems. Proceedings of the Royal Society of London . 1957

[3] Nisitani H.Behavior of small cracks in fatigue and relating phenomena. Tnaaka A, Tono M, Komai K. Research on Fatigue Cracks[C]Japan: The Society of Material Science . 1985

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