Volume 37 Issue 8
Aug.  2011
Turn off MathJax
Article Contents
Meng Xianhong, Bai Zhaoyu, Zhang Xinget al. Damage mechanics method to predict the fatigue life of 3-D structural members under spectrum load[J]. Journal of Beijing University of Aeronautics and Astronautics, 2011, 37(8): 912-917,932. (in Chinese)
Citation: Meng Xianhong, Bai Zhaoyu, Zhang Xinget al. Damage mechanics method to predict the fatigue life of 3-D structural members under spectrum load[J]. Journal of Beijing University of Aeronautics and Astronautics, 2011, 37(8): 912-917,932. (in Chinese)

Damage mechanics method to predict the fatigue life of 3-D structural members under spectrum load

  • Received Date: 29 Mar 2010
  • Publish Date: 30 Aug 2011
  • A conservative integral of three dimensional structures in damage mechanics was established. The expression of the stress and the strain considering the effect of damage coupling was deduced by means of the path independent property of this integral and the condition of small scale damage. Based on the damage evolution equations expressed by the damage driving force, a closed form solution to determine the fatigue crack formation life under the spectrum load was obtained. According to the above analysis, the damage evolution equation with equivalent stress of non variable separated type was established, and a closed form solution of integral type was obtained to determine the fatigue crack formation life under the short period load. The fatigue life of the landing gear of certain airplane as the representative of 3-D structural member is predicted.

     

  • loading
  • [1] Lemaitre J.A course on damage mechanics[M].New York:Springer-Verlag,1992 [2] 张行,赵军.金属构件应用疲劳损伤力学[M].北京:国防工业出版社,1998 Zhang Xing,Zhao Jun,Applied fatigue damage mechanics of metallic structral members[M].Beijing:Press of National Defence Industry,1998(in Chinese) [3] Zhang X,Zhao J,Hwang K C,A method of damage mechanics for the prediction of fatigue life[C]//Proceedings of the 3rd Int Conf on Fract and Strength of Solids.Hong Kong:[s.n.],1997:433-442 [4] 白瞾宇,孟宪红,张行.含沟槽轴对称杆疲劳寿命的损伤力学闭合解[J].航空学报,2007,28(3) :579-581 Bai Zhaoyu,Meng Xianhong,Zhang Xing,Closed form solution of damage mechanics to predict the fatigue life of axially symmetric bars with grooves[J].Acta Aernautica et Astronautica Sinica,2007,28(3):579-581(in Chinese) [5] 高镇同.疲劳性能试验设计和数据处理[M].北京:北京航空航天大学出版社,1999 Gao Zhentong.Fatigue properties experimental design and data analysis[M].Beijing:Press of Beijing University of Aeronautics and Astronautics,1999(in Chinese) [6] 白瞾宇,孟宪红,张行.确定材料概率疲劳曲线的损伤力学方法[J].北京航空航天大学学报,2005,31(9),1027-1030 Bai Zhaoyu,Meng Xianhong,Zhang Xing.Method of damage mechanics to determine the p-S-N curve of material[J].Journal of Beijing University of Aeronautics and Astronautics,2005,31(9):1027-1030 (in Chinese) [7] 白曌宇.疲劳损伤力学新方法及其在工程中之应用[D].北京:北京航空航天大学航空科学与工程学院,2009 Bai Zhaoyu.The new method of damage mechanics and its application in engineering[D].School of Aeronautic Science and Engineering,Beijing University of Aeranautics and Aestronautics,2009(in Chinese) [8] 刘克格,阎楚良,张书明.飞机起落架疲劳损伤估算及其特点[J].吉林大学学报:工学版,2005,35(6):660-664 Liu Kege,Yan Chuliang,Zhang Shuming.Estimation for fatigue damage of airplane landing gear[J].Journal of Jilin University:Engineering and Technology Edition,2005,35(6):660-664 (in Chinese) [9] 杨继运,张行,张珉.基于疲劳裂纹形成曲线的裂纹扩展分析数值方法[J].机械工程学报,2004,40(7):55-62 Yang Jiyun,Zhang Xing,Zhang Min.Numerical method for crack extension analysis based on fatigue crack formation curve[J].Journal of Mechanical Engineering,2004,40(7):55-62(in Chinese)
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Article Metrics

    Article views(2664) PDF downloads(673) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return