Volume 27 Issue 2
Feb.  2012
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HE Qing, XUAN Hai-jun, LIU Lu-lu. Numerical analysis of real aero-engine first-stage fan blade containment[J]. Journal of Aerospace Power, 2012, 27(2): 295-300.
Citation: HE Qing, XUAN Hai-jun, LIU Lu-lu. Numerical analysis of real aero-engine first-stage fan blade containment[J]. Journal of Aerospace Power, 2012, 27(2): 295-300.

Numerical analysis of real aero-engine first-stage fan blade containment

  • Received Date: 2011-03-17
  • Rev Recd Date: 2011-07-22
  • Publish Date: 2012-02-28
  • To study the mechanism of the aero-engine fan blade containment process at the maximum operating speed and the effects of multiple blade interaction on it, several numerical simulations with three different computational models based on the real aero-engine first-stage fan component were carried out. Results show that uncontained failure is observed under the impact of the released blade. Initial cracks on the casing are caused by biaxial tensile stresses, and large-scale tearing is likely to arise along the initial cracks. The released blade suffers from complicated force and is torn into two parts. There are three major impacts during the containment process. The first impact is the interaction between the blade tip and the casing, which is slight and lasts for a short time. The impact force reaches maximum during the second impact. The influences of the remaining rotating blades afterward are noticeable during the third impact. Under the impact of the remaining rotating blades, the increase of the kinetic energy of the released blade is obvious.

     

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