Research of stress assessment for the 135-degree sheet corner based on singularity strength theory

Song S. Gao, Li L. Xu, Dazheng D. Wang, Nigel D P N.D.P. Barltrop

Research output: Contribution to journalArticle

2 Citations (Scopus)


This paper will research the singularity strength theory to stress distribution of a 135-degree sheet corner which bases on notch stress intensity factor (N-SIF) theory. The N-SIF formula is simplified through singularity strength 'as' which is related to structure size. Numerical simulations by ANSYS and regression analysis by MathCAD are done for a number of cases. Finally a simple assessment algorithms and the empirical formula for the notch stress are proposed and verified. The results can be used for structural strength and fatigue analysis.
Original languageEnglish
Pages (from-to)72-79
Number of pages8
JournalWuhan Ligong Daxue Xuebao/Journal of Wuhan University of Technology
Issue number12
Publication statusPublished - 1 Dec 2013



  • notch-stress intensity factor
  • singularity
  • singularity strength
  • stress distribution

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