Volume 12 Issue 3
Jul.  1997
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Article Navigation >  Journal of Aerospace Power  > 1997  >  12(3): 309-312,335
Ding LeiFan, Yinhe. FRACTURE MECHANICS ANALYSIS OF FATIGUE STRENGTH OF LAP-WELDED JOINTS[J]. Journal of Aerospace Power, 1997, 12(3): 309-312,335.
Citation: Ding LeiFan, Yinhe. FRACTURE MECHANICS ANALYSIS OF FATIGUE STRENGTH OF LAP-WELDED JOINTS[J]. Journal of Aerospace Power, 1997, 12(3): 309-312,335.
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FRACTURE MECHANICS ANALYSIS OF FATIGUE STRENGTH OF LAP-WELDED JOINTS

  • 2nd Dept.Nanjing University of Aeronautics and Astronautics, Nanjing 210016

  • Received Date: 1996-09-01
  • Rev Recd Date: 1997-01-01
  • Publish Date: 1997-07-28
    Abstract
  • According to the elastic fracture mechanics,a parameter of lap stress intensity Kθ was used to describe the fatigue strength of lap-welded joints.Various influential factors of the Kθ have been analysed by finite element method.Therefore an empi rical formula for Kθ was deduced.From fatigue experiments of the lap-welded joints specimens made by two kinds of material(GH150 and 1Cr18Ni9Ti),two △K-N curves were obtained.The fatigue life of various complicated lap-welded joints can be estimated more accurately with the △K-N curves presented in this paper.

     

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