期刊文献+

A7N01铝合金复合加载下的疲劳裂纹扩展行为 被引量:6

Fatigue crack propagation behavior of A7N01 aluminum alloy under combined load
下载PDF
导出
摘要 利用CTS试样,研究了A7N01P-T4铝合金母材在I-II型复合加载下,不同加载角度时疲劳裂纹的扩展行为,利用有限元数值计算复合加载下裂纹尖端的应力强度因子(SIF,stress intensity factor)得到了加载角度与裂纹开裂方向的关系,并与由最大周向应力准则导出的关系进行了对比,二者吻合良好;根据疲劳试验和有限元计算的结果,并引入当量应力强度因子,分析了不同加载角下疲劳裂纹的扩展速率.结果表明,经当量化处理后,各加载角下的裂纹扩展速率曲线基本重合,并且满足Paris公式. The fatigue crack propagation behavior of A7N01P-T4 aluminum alloy with different loading angles was investigated. The crack tip stress intensity factor( SIF) under combined I-II loading mode was calculated using the finite element method. The relationship between the loading angle and crack direction was obtained,which agreed well with the maximum circumferential stress criteria. Then,the equivalent stress intensity factor( ESIF) was introduced to analyze the relationship between crack growth rate and loading angles. The results show that after quantization treatment,the crack growth rates under different loading angles are coincident,which also meet the Paris law.
出处 《焊接学报》 EI CAS CSCD 北大核心 2015年第10期91-94,117-118,共4页 Transactions of The China Welding Institution
关键词 A7N01铝合金 复合加载 开裂方向 扩展速率 A7N01 aluminum alloy combined loading cracking angle growth rates
  • 相关文献

参考文献6

二级参考文献21

  • 1李光海,刘正义.基于声发射技术的金属高频疲劳监测[J].中国机械工程,2004,15(13):1205-1209. 被引量:33
  • 2Joselin R, Chelladurai T. Burst pressure prediction of compositepressure chambers using acoustic emission technique : a review[J]. Journal of Failure Analysis and Prevention,2011,11: 344-356.
  • 3Ahmed Maslouhi. Fatigue crack growth monitoring in aluminumusing acoustic emission and acousto-ultrasonic methods [ J ].Structural Control and Health Monitoring, 2011,18: 790 -806.
  • 4Harris D 0,Dunegan H L. Continuous monitoring of fatiguecrack growth acoustic emission techniques [ J ] . NondestructiveTesting and Evaluation, 1998 , 14: 71 -87.
  • 5Morton T M, Harrington R M, Bjeletich J G. Acoustic emissionof fatigue crack growth [ J ]. Engineering Fracture Mechanics,1973, 5: 691 -697.
  • 6Hamel F, Bailon J P, BaSvSim M N. Acoustic emission mecha-nisms during high-cycle fatigue [ J ] . Engineering Fracture Me-chanics t 1981,14: 853 -860.
  • 7Sinclair ACE, Connors D C, Formby C F. Acoustic emission a-nalysis during fatigue crack growth in steelf J] . Materials Scienceand Engineering, 1977, 8: 263 -273.
  • 8Denial I M,Luo J J,Sifniotopoulos C G. Acoustic emission Mo-nitoring of fatigue damage in metals[J]. International Journal ofPlasticity, 2003, 19(6) : 771 -804.
  • 9Wang T, Yang J G, Liu X S, et al. Stress intensity factor expres- sion for center-cracked butt joint considering the effect of joint shape[J]. Materials and Design, 2012, (35) : 72 -79.
  • 10Wang T, Yang J G, Liu X S, et al. Stress intensity factor expres- sion for butt joint wilh single-edge crack eonsidering the effect of joint shape[J]. Materials and Design, 2012, (36): 748-756.

共引文献32

同被引文献30

引证文献6

二级引证文献7

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部