航空铝合金薄板在疲劳载荷下孔洞聚合的试验研究和一个新发现

王芳文; 陈宜亨

您当前的位置：

首页 >

文章列表页 >

航空铝合金薄板在疲劳载荷下孔洞聚合的试验研究和一个新发现

探索与争鸣 | 更新时间：2025-05-08

- 航空铝合金薄板在疲劳载荷下孔洞聚合的试验研究和一个新发现
- A New Find in Experimental Research on Coalescence Between Two Holes in Aluminum Alloy Strip under Cyclic Tensile Loading
- 西安交通大学学报 2009年43卷第1期页码：125-128
- 作者机构：
  
  西安交通大学航天航空学院,西安,710049
- 作者简介：
- 基金信息：
  
  : 2008-09-28. 作者简介: 王芳文(1963-),男,副教授;陈宜亨(联系人),男,教授,博士生导师. 基金项目: 国家自然科学基金资助项目(10572110)
- DOI：
  中图分类号： O346.4
- 网络首发：2009-01-10，
  
  纸质出版：2009
- 稿件说明：
移动端阅览
王芳文, 陈宜亨. 航空铝合金薄板在疲劳载荷下孔洞聚合的试验研究和一个新发现[J]. 西安交通大学学报, 2009,43(1):125-128.

WANG Fangwen, CHEN Yiheng. A New Find in Experimental Research on Coalescence Between Two Holes in Aluminum Alloy Strip under Cyclic Tensile Loading[J]. 2009, 43(1): 125-128.
王芳文, 陈宜亨. 航空铝合金薄板在疲劳载荷下孔洞聚合的试验研究和一个新发现[J]. 西安交通大学学报, 2009,43(1):125-128. DOI：

WANG Fangwen, CHEN Yiheng. A New Find in Experimental Research on Coalescence Between Two Holes in Aluminum Alloy Strip under Cyclic Tensile Loading[J]. 2009, 43(1): 125-128. DOI：

摘要

对航空铝合金薄板在疲劳载荷下的两个相邻孔洞聚合进行了详细的试验研究.最初预计初始的疲劳裂纹应该在两个相邻孔洞之间的区域产生

并且导致两个相邻孔洞聚合为一个复杂的新缺陷

但是试验结果却发现:在某些情况下

初始的疲劳裂纹产生在远离两个相邻孔洞之间区域的外区域

即不是产生在两个相邻孔洞之间区域的内边缘上

而是产生在外边缘上

只有当这条初始裂纹在疲劳载荷下扩展一定长度并止裂一段时间后

在两个相邻孔洞之间的内区域才产生第二条裂纹

该第二条裂纹的扩展才引起聚合的发生

而在第二条裂纹扩展期间

第一条裂纹始终处于止裂状态.这个现象超出了经典的疲劳裂纹萌生的基本理论

也无法用经典的应力集中理论来解释.

Abstract

This note reports an interesting phenomenon found in authors' experimental investigation to the coalescence between two neighborly located holes in an aluminum alloy strip under cyclic tensile loadings. Unlike expected

the initial fatigue crack was found not to nucleate in the center region between the two holes

where the stress concentration is much higher than the other positions

rather

the initial crack always nucleated at the outside rim of holes far apart from the center region. The coalescence between the two holes always occurred far after the initial fatigue crack nucleation. This phenomenon cannot be explained by the classical theories.

关键词

Keywords

references

SCHÜTZ W. The prediction of fatigue life in the crack initiation and propagation stages: a state of the art survey [J]. Eng Fract Mech, 1979, 11(2): 405-421.

BUCH A. Prediction of fatigue life under aircraft loading with and without use of material memory rules [J]. International Journal of Fatigue, 1989, 11(2): 97-106.

KAJAWSKI D, ELLYIN F. A unified approach to mean stress effect on fatigue threshold conditions [J]. International Journal of Fatigue, 1995, 17(2): 101-106.

SOCIE D. Multiaxial fatigue damage models [J]. ASME J Eng Mater Technol, 1987, 109(3): 293-298.

GOLOS K, ELLYIN F. Total strain-energy density theory for cumulative fatigue damage [J]. ASME J Press Vess Tech, 1988, 110(1): 36-41.

ZHENG Xiulin. A further study on fatigue crack initiation life: mechanical model for fatigue crack initiation [J]. International Journal of Fatigue, 1986, 8(1): 17-21.

DUPART D, DAVY A, BOETSCH R, et al. Fatigue damage calculation in stress concentration fields under uniaxial stress [J]. International Journal of Fatigue, 1996, 18(4): 245-253.

SOCIE D, WAILL L A, DITTMER D F. Biaxial fatigue of Inconel 718 including mean stress effects [M]∥MILLER K J, BROWN M W. Multiaxial Fatigue, ASTM STP 853. Philadelphia, PA, USA: ASTM, 1985: 463-481.

MADI Y, MATHERON P, RECHO N, et al. Low cycle fatigue of welded joints: new experimental approach [J]. Nucl Eng Des, 2004, 228(1/3): 161-177.

MADI Y, RECHO N, MATHERON P. Low-cycle fatigue of welded joints: coupled initiation propagation model [J]. Nucl Eng Des, 2004, 228(1/3): 179-194.

HURLEY P J, WHITTAKER T, WILLIAMS S J, et al. Prediction of fatigue initiation lives in notched Ti 6246 specimens [J]. International Journal of Fatigue, 2008, 30(4): 623-634.

DUPART D, CAMPASSENS D, BALZANO M, et al. Fatigue life prediction of interference fit fastener and cold worked holes [J]. International Journal of Fatigue, 1996, 18(8): 515-521.

吕宝桐,张建国,凌超,等. 15MnVN钢疲劳性能的实验研究[J].机械强度, 1992, 14(4): 70-75.

LÜ Baotong, ZHANG Jianguo, LING Chao. Experimental investigation into fatigue behaviour of 15MnVN steel [J]. Journal of Mechanical Strength, 1992, 14(4): 70-75.

LÜ Baotong, ZHENG Xiulin, LI D. Fatigue crack initiation and propagation in butt welds of an ultrahigh strength steel [J]. Welding J, 1993, 2(2): 79-86.

LÜ Baotong, ZHENG Xiulin. Predicting fatigue crack initiation life of an aluminum alloy below room temperature [J]. Fatigue Fract Eng Mater Struct, 1992, 15(12): 1213-1221.

TAY C J, TAY T E, SHANG Huaimin, et al. Fatigue crack initiation studies using a speckle techniques [J]. International Journal of Fatigue, 1994, 16(6): 423-428.

ZHENG Xiulin, LING Chao. On the expression of fatigue crack initiation life considering the factor of overloading effect [J]. Eng Fract Mech, 1988, 31(6): 959-966.

ZHENG Xiulin. Modeling fatigue crack initiation life [J]. International Journal of Fatigue, 1993, 15(6): 461-466.

THAUVIN G. Influence of surface roughness on fatigue and corrosion fatigue behavior of 0.12C-12Cr-2.5Ni-1.8Mo-0.3V steel [C]∥Proceedings of the 7th International Fatigue Congress, FATIGUE'99. Beijing, China: Higher Education Press, 1999:2347-2352.

SCHOELER K, CHRIST H J. Influence of prestraining on cyclic deformation behavior and microstructure of a single-phase Ni-base superalloy [J]. International Journal of Fatigue, 2001, 23(9): 767-775.

浏览量

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

铝合金薄板在疲劳载荷下孔洞聚合试验中的材料损失

铜长条薄板在疲劳载荷下裂纹聚合的试验研究和一个新发现

面向裂纹扩展的连结型刚体-弹簧离散元模型

采用试验设计方法的第三代CO2气体箔轴承箔片几何参数敏感性分析

混合电解槽阵列协同的风光耦合制氢系统双层多目标优化