Crack Growth Characteristic Analysis for a Typical Connection Structure of Titanium Alloy
XIAO Shan1, BI Jinying1, SUN Yanpeng1, LIU Shutian2, LIU Yang2
(1. AVIC Shenyang Aircraft Design Research Institute, Shenyang 110035, China;
2. State Key Laboratory of Structural Analysis for Industrial Equipment,
Dalian University of Technology, Dalian 116024, China)
Abstract：The fatigue crack growth characteristics of the traditional lug and diffusion bonded lug with localized
non-welded area of TC4 titanium-alloy are studied, and the simulation techniques based on extended finite element method
(XFEM) under tension-tension cyclic loading are used, in order to reveal the inhibitory effect of non-welded area on crack
growth when the bolt hole is in the extrusion. The comparisons of the numerical results and the experimental results show
that the extended finite element method (XFEM) is an effective numerical method for the fatigue crack growth characteristics
analysis.
2017, 
