Volume 28 Issue 6
Jun.  2013
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ZHANG Cheng-cheng, YAO Wei-xing. Typical fatigue life analysis approaches for notched components[J]. Journal of Aerospace Power, 2013, 28(6): 1223-1230.
Citation: ZHANG Cheng-cheng, YAO Wei-xing. Typical fatigue life analysis approaches for notched components[J]. Journal of Aerospace Power, 2013, 28(6): 1223-1230.
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Typical fatigue life analysis approaches for notched components

  • 1.

    Center of Research for Aero-Engine Structural Integrity, Commercial Aircraft Engine Company Limited, Aviation Industry Corporation of China, Shanghai 200240, China

  • 2.

    College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

  • Received Date: 2012-03-01
  • Publish Date: 2013-06-28
    Abstract
  • Some commonly used fatigue life analysis approaches for notched components were systemically reviewed.According to different descriptions of the notch effect,the fatigue life analysis approaches for notched component were classified into three categories,namely,local stress-strain approaches,stress gradient approaches and critical zone approaches.The capability of each approach was discussed and experimentally checked by four groups of LCF(low cycle fatigue) test data of LY12CZ aluminum alloy under different notch geometry.It's found that the predictions with regard to stress gradient and distribution of stress field (e.g. critical zone approach and stress gradient approach) show a good agreement with test data as well as the stress field intensity approach can predict the correct failure location, while the local stress-strain approach showes poor fitness and low accuracy.

     

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