Journal
JOURNAL OF COMPOSITES SCIENCE
Volume 5, Issue 7, Pages -Publisher
MDPI
DOI: 10.3390/jcs5070171
Keywords
bird strike; impact damage; composite plate; SPH; FEM simulation; fan blade
Categories
Funding
- National Natural Science Foundation of China and Civil Aviation Administration of China [U2033202, U1333119]
- National Science and Technology Major Project [2017-VIII-0003-0114, 2017-VIII-0002-0113]
- National Natural Science Foundation of China [62076126]
- Fundamental Research Funds for the Central Universities [1007-XAA21002]
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The study found that changing the boundary condition is the most effective way to obtain desirable impact damages, which is important for further analysis of real fan blade failures.
Bird-strike failure of fan blades is one of the basic challenges for the safety of aircraft engines. Simplified flat blade-like plates are always used for damage mechanism study of composite laminates. One undesirable issue is the failure at the root of clamped flat plates under high-velocity impact. For this purpose, two different strategies were exploited to obtain desirable impact damage distributions, namely the impact location and the boundary condition. Numerical models of the simplified flat blade-like plate and the bird projectile were constructed by using finite element method (FEM) and smoothed particle hydrodynamics (SPH) approaches. The impact damage distributions were comparatively investigated in detail. The numerical results show that changing the boundary condition is the most effective way to obtain preferable impact damages for further failure analysis of real fan blades. Present results will be useful to the future surrogate experimental design of simplified bird-strike testing.
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