Please wait a minute...
 
2222材料工程  2021, Vol. 49 Issue (1): 168-176    DOI: 10.11868/j.issn.1001-4381.2019.001158
  研究论文 本期目录 | 过刊浏览 | 高级检索 |
基于DIC的铝合金薄壁缺口件多轴疲劳行为
陈亚军, 徐鹏达, 王付胜, 刘辰辰
中国民航大学 中欧航空工程师学院, 天津 300300
Multiaxial fatigue behavior of aluminum alloy thin-walled notched specimens based on DIC
CHEN Ya-jun, XU Peng-da, WANG Fu-sheng, LIU Chen-chen
Sino-European Institute of Aviation Engineering, Civil Aviation University of China, Tianjin 300300, China
全文: PDF(28728 KB)   HTML
输出: BibTeX | EndNote (RIS)      
摘要 为探究缺口对材料多轴疲劳性能的影响,以航空用7075-T651铝合金薄壁缺口件为研究对象,进行等效应力幅变量的比例多轴疲劳实验,采用数字图像相关技术进行表征并分析临界平面角度。结果表明:随加载等效应力幅的增加,试样多轴疲劳寿命降低,缺口附近最大轴向、扭向和剪切工程应变增大。不同加载条件下,缺口附近应变集中现象均随着加载周次的增加而逐渐增强。缺口附近的应变变化过程可分为裂纹萌生、裂纹扩展及瞬断阶段。引入临界平面角度和其上最大正应变,提出SWT修正模型,其预测结果均位于2倍分散带内。
服务
把本文推荐给朋友
加入引用管理器
E-mail Alert
RSS
作者相关文章
陈亚军
徐鹏达
王付胜
刘辰辰
关键词 7075-T651铝合金缺口件多轴疲劳失效机理寿命预测    
Abstract:Focusing on the influence of notch on the multiaxial fatigue performance of material, the proportional multiaxial fatigue test was carried out on 7075-T651 aluminum alloy thin-walled notched specimens with variable equivalent stress amplitude. The digital image correlation technique was used to characterize and analyze the critical plane angle. The results show that with the increase of the equivalent stress amplitude, the multiaxial fatigue life of the specimen decreases, and the maximum axial, torsional and shear engineering strains near the notch increase. Under different loading conditions, the strain concentration near the notch increases with the increase of loading cycles. The process of strain change near the notch can be divided into crack initiation, crack growth and instantaneous fracture stages. By introducing the critical plane angle and the maximum positive strain on it, a modified SWT model is proposed. Fine life prediction results are obtained by the modified model with all predicted data in the two scatter bands.
Key words7075-T651 aluminum alloy    notched specimen    multiaxial fatigue    failure mechanism    life pre- diction
收稿日期: 2020-06-04      出版日期: 2021-01-14
中图分类号:  O346.2  
基金资助:中国民航大学专项自然科学类重点项目(3122019194)
通讯作者: 陈亚军(1976-),男,教授,博士,主要从事飞机结构材料失效分析方面的研究,联系地址:天津市东丽区津北公路2898号中国民航大学中欧航空工程师学院(300300),E-mail:yjchen@cauc.edu.cn     E-mail: yjchen@cauc.edu.cn
引用本文:   
陈亚军, 徐鹏达, 王付胜, 刘辰辰. 基于DIC的铝合金薄壁缺口件多轴疲劳行为[J]. 材料工程, 2021, 49(1): 168-176.
CHEN Ya-jun, XU Peng-da, WANG Fu-sheng, LIU Chen-chen. Multiaxial fatigue behavior of aluminum alloy thin-walled notched specimens based on DIC. Journal of Materials Engineering, 2021, 49(1): 168-176.
链接本文:  
http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2019.001158      或      http://jme.biam.ac.cn/CN/Y2021/V49/I1/168
[1] 中国航空材料手册编委会.中国航空材料手册第3卷铝合金镁合金[M].北京:中国标准出版社,2002. Edit Committee of China Aeronautical Materials Handbook.China aeronautical materials handbook:volume Ⅲ aluminum alloy magnesium alloy[M].Beijing:Standard Press of China,2002.
[2] 杨守杰,戴圣龙.航空铝合金的发展回顾与展望[J].材料导报,2005,19(2):76-80. YANG S J,DAI S L.A glimpse at the development and application of aluminum alloys in aviation industry[J].Materials Review,2005,19(2):76-80.
[3] DURSUN T,SOUTIS C.Recent developments in advanced aircraft aluminum alloys[J].Materials & Design,2014,56(4):862-871.
[4] 王英玉,姚卫星.双轴加载下缺口疲劳裂纹萌生位置的研究[J].机械强度,2004,26(增刊):12-14. WANG Y Y,YAO W X.Study on fatigue crack initiation site of notched tubular specimen under biaxial loading[J].Journal of Mechanical Strength,2004,26(Suppl):12-14.
[5] FATEMI A,GATES N,SOCIE D F,et al.Fatigue crack growth behaviour of tubular aluminium specimens with a circular hole under axial and torsion loadings[J].Engineering Fracture Mecha-nics,2014,123:137-147.
[6] 王效贵,高增梁,邱宝象,等.16MnR缺口件疲劳启裂寿命的理论分析与实验研究[J].核动力工程,2010,31(5):32-38. WANG X G,GAO Z L,QIU B X,et al.Theoretical modeling and experimental study on fatigue initiation life of 16MnR notched components[J].Nuclear Power Engineering,2010,31(5):32-38.
[7] BERTO F,CAMPAGNOLO A,LAZZARIN P.Fatigue strength of severely notched specimens made of Ti-6Al-4V under multiaxial loading[J].Fatigue & Fracture of Engineering Materials & Structures,2015,38(5):503-517.
[8] 陈亚军,刘辰辰,褚玉龙,等.7075-T651铝合金薄壁管件多轴低周疲劳行为及寿命预测[J].材料工程,2018,46(10):60-69. CHEN Y J,LIU C C,CHU Y L,et al.Multiaxial low-cycle fatigue behavior and life prediction of 7075-T651 aluminum alloy thin-walled tubular specimens[J].Journal of Materials Engineering,2018,46(10):60-69.
[9] 丁智平,曾军,陈吉平.镍基单晶合金多轴非对称循环加载应力弱化损伤与低周疲劳研究[J].航空学报,2013,34(12):2768-2776. DING Z P,ZENG J,CHEN J P.Study on stress-weakening da-mage and low cycle fatigue of Ni-based single crystal superalloy under multiaxial asymmetric loading[J].Acta Aeronautica et Astronautica Sinica,2013,34(12):2768-2776.
[10] 赵凯,何玉怀,刘新灵,等.拉弯扭比例加载下50CrVA弹簧钢的多轴疲劳寿命及损伤特征[J].材料工程,2014(12):99-103. ZHAO K,HE Y H,LIU X L,et al.Multiaxial fatigue life and damage characteristics of 50CrVA spring steel under tension-bending-torsion proportional loading[J].Journal of Materials Engineering,2014(12):99-103.
[11] 陈亚军,王先超,王付胜,等.2A12铝合金的多轴加载疲劳行为[J].材料工程,2017,45(8):68-75. CHEN Y J,WANG X C,WANG F S,et al.Fatigue behavior of 2A12 aluminum alloy under multiaxial loading[J].Journal of Materials Engineering,2017,45(8):68-75.
[12] GATES N,FATEMI A.Notch deformation and stress gradient effects in multiaxial fatigue[J].Theoretical & Applied Fracture Mechanics,2016,84:3-25.
[13] 刘恩涛,尚德广,陈宏,等.多轴随机应变加载下铝合金缺口件有限元分析及寿命预测[J].机械强度,2012(4):114-119. LIU E T,SHANG D G,CHEN H,et al.Finite element analysis and life prediction for aluminum notched specimen under multi-axial random strain loading[J].Journal of Mechanical Strength,2012(4):114-119.
[14] 陈震.金属材料缺口件疲劳寿命预测方法研究[D].秦皇岛:燕山大学,2019. CHEN Z.Study on fatigue life prediction method for notched metal material parts[D].Qinhuangdao:Yanshan University,2019.
[15] 金丹,田大将,王巍,等.非比例载荷下缺口件疲劳寿命预测[J].工程力学,2014,31(10):212-215. JIN D,TIAN D J,WANG W,et al.Fatigue life prediction of notched specimens under non-proportional loadings[J].Engineering Mechanics,2014,31(10):212-215.
[16] 金丹,缑之飞.缺口件疲劳寿命预测新方法[J].航空材料学报,2017,37(2):81-87. JIN D,GOU Z F.A new method of fatigue life prediction for notched specimen[J].Journal of Aeronautical Materials,2017,37(2):81-87.
[17] SUTTON M A,ORTEU J J,SCHREIER H W.Image correlation for shape,motion and deformation measurements[M]. US:Springer,2009.
[18] SRILAKSHMI R,RAMJI M,CHINTHAPENTA V.Fatigue crack growth study of CFRP patch repaired Al 2014-T6 panel having an inclined center crack using FEA and DIC[J].Engineering Fracture Mechanics,2014,134(13):182-201.
[19] 刘聪,陈振宁,何小元.3D-DIC在土木结构力学性能实验研究中的应用[J].东南大学学报(自然科学版),2014(2):339-344. LIU C,CHEN Z N,HE X Y.Application of 3D-DIC in experimental study on mechanical properties of civil structures[J].Journal of Southeast University (Natural Science Edition),2014(2):339-344.
[20] 姚晓鹏.拉扭循环加载下缺口件应力应变分析与寿命预测[D].兰州:兰州理工大学,2010. YAO X P.Stress-strain analysis and life prediction for notched specimens under tensile and torsional cyclic loading[D]. Lanzhou:Lanzhou University of Technology,2010.
[21] SOCIE D.Multiaxial fatigue damage models[J].Key Engineering Materials,1987,324/325(4):747-750.
[22] INCE A,GLINKA G.A generalized fatigue damage parameter for multiaxial fatigue life prediction under proportional and non-proportional loadings[J].International Journal of Fatigue,2014,62:34-41.
[1] 卢轶榕, 郑华勇, 陈秀华, 汪海. 三维机织复合材料/钛合金混杂板缝合连接剪切失效机理[J]. 材料工程, 2020, 48(11): 162-169.
[2] 李会芳, 赵杰, 程从前, 闵小华, 曹铁山, 许军. 基于Zc参数的HP耐热合金高温蠕变及持久寿命的预测方法[J]. 材料工程, 2018, 46(3): 112-116.
[3] 陈亚军, 刘辰辰, 褚玉龙, 宋肖肖. 7075-T651铝合金薄壁管件多轴低周疲劳行为及寿命预测[J]. 材料工程, 2018, 46(10): 60-69.
[4] 陈亚军, 王先超, 王付胜, 周剑, 吴悦雷. 不同应力幅比加载下2A12铝合金的多轴疲劳性能[J]. 材料工程, 2017, 45(9): 136-142.
[5] 陈亚军, 王先超, 王付胜, 刘波. 2A12铝合金的多轴加载疲劳行为[J]. 材料工程, 2017, 45(8): 68-75.
[6] 许军, 李会芳, 程从前, 曹铁山, 赵杰. 基于应力松弛实验对服役25Cr35Ni型耐热钢的高温性能评估[J]. 材料工程, 2017, 45(8): 96-101.
[7] 雍薇, 黄兴民, 张雷, 程乾, 戴光泽. 热浸镀铝球墨铸铁失效机理研究[J]. 材料工程, 2016, 44(8): 77-84.
[8] 王亚杰, 王波, 张龙, 马宏毅. 玻璃纤维-铝合金正交层板的拉伸性能研究[J]. 材料工程, 2015, 43(9): 60-65.
[9] 左平, 魏大盛, 王延荣. FGH95粉末高温合金裂纹闭合效应及裂纹扩展特性研究[J]. 材料工程, 2015, 43(8): 56-61.
[10] 江冯, 李萍, 程从前, 刘春慧, 赵杰. θ投影法和复合模型在预测耐热钢蠕变行为的比较分析[J]. 材料工程, 2015, 43(7): 87-92.
[11] 童第华, 吴学仁, 刘建中, 胡本润, 陈勃. 基于小裂纹理论的铸造钛合金ZTC4疲劳寿命预测[J]. 材料工程, 2015, 43(6): 60-65.
[12] 齐红宇, 马立强, 李少林, 杨晓光, 王亚梅, 魏洪亮. 等离子热障涂层构件高温热疲劳寿命预测研究[J]. 材料工程, 2014, 0(7): 67-72.
[13] 赵凯, 何玉怀, 刘新灵, 陶春虎. 拉弯扭比例加载下50CrVA弹簧钢的多轴疲劳寿命及损伤特征[J]. 材料工程, 2014, 0(12): 99-103.
[14] 杨金丽, 雷永平, 林健, 肖慧. 银含量对跌落条件下无铅焊点疲劳寿命和失效模式的影响[J]. 材料工程, 2013, 0(12): 74-79.
[15] 黄亮亮, 孟惠民, 陈龙. 磁铅石结构六铝酸盐热障涂层的研究现状[J]. 材料工程, 2013, 0(12): 92-99.
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
版权所有 © 2015《材料工程》编辑部
地址:北京81信箱44分箱 邮政编码: 100095
电话:010-62496276 E-mail:matereng@biam.ac.cn
本系统由北京玛格泰克科技发展有限公司设计开发 技术支持:support@magtech.com.cn