2015 Fiscal Year Final Research Report
Modeling of bird-strike damage in aircraft composite components
| Project/Area Number |
25289306
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Aerospace engineering
|
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| Research Institution | Shizuoka University |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2016-03-31
|
| Keywords | 複合材料・物性 / 航空宇宙工学 / 高速衝撃 / 解析・評価 / 粒子法 / SPH |
|---|
| Outline of Final Research Achievements |
This study aimed to establish an integrity evaluation technology for aircraft composite structures against bird strike events and developed a numerical method to predicting bird-strike damage of CFRP laminates. More specifically, we developed an improved smoothed particle hydrodynamics (SPH) that achieved inhomogeneous initial particles arrangement and resulting reduction of calculation cost. Moreover, a material softening model was introduced into the constitutive equation of a particle to represent energy absorption due to crack extension. This approach enabled us to analyze extension of delamination in composite laminates. We finally predicted bird-strike damage of CFRP cross-ply laminates, and demonstrated that the present method could represent the damage extension observed in the experiments.
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| Free Research Field |
複合材料工学
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