Volume 36 Issue 5
Oct 2022
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ZHANG Yongqiang, JIA Lin. Dynamic Response and Damage Failure Behavior of TC4 Titanium Alloy Hollow Fan Blade[J]. Chinese Journal of High Pressure Physics, 2022, 36(5): 054103. doi: 10.11858/gywlxb.20220546
Citation: ZHANG Yongqiang, JIA Lin. Dynamic Response and Damage Failure Behavior of TC4 Titanium Alloy Hollow Fan Blade[J]. Chinese Journal of High Pressure Physics, 2022, 36(5): 054103. doi: 10.11858/gywlxb.20220546

Dynamic Response and Damage Failure Behavior of TC4 Titanium Alloy Hollow Fan Blade

doi: 10.11858/gywlxb.20220546
  • Received Date: 23 Mar 2022
  • Rev Recd Date: 08 Apr 2022
  • Accepted Date: 20 Apr 2022
  • Issue Publish Date: 11 Oct 2022
  • Aero-engine is a high probability and high-risk component of bird strike events, which is of great significance to the study of bird strike resistance of fan blades. In this paper, based on the three-dimensional digital image correlation (DIC) in-situ strain measurement method, the static bird strike tests of TC4 titanium alloy hollow structure fan blades at different heights are carried out. In addition, a simulation model is established based on Johnson-Cook dynamic constitutive model and damage failure theory to better verify and describe the dynamic deformation response process and failure situation of aero-engine fan blades during bird strikes. It is found that the variation of bird strike velocity mainly affects the magnitude of blade deformation, but does not cause the change of blade characteristic mode. In the bird strike process, the middle root is a significant area of stress/strain localization, which is more prone to damage failure. It is found that with the increase of bird impact position, the critical bird impact velocity corresponding to the failure of the hollow fan blade at the blade root increases gradually, and the bird impact resistance of the whole structure is better. This experiment and the corresponding simulation study provide a certain reference for the anti-bird impact design of the TC4 titanium alloy hollow structure fan blade.

     

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