Modeling of bird-strike damage in aircraft composite components
| Project/Area Number |
25289306
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Partial Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Research Field |
Aerospace engineering
|
|---|
| Research Institution | Shizuoka University |
|---|
Principal Investigator |
|
|---|
| Project Period (FY) |
2013-04-01 – 2016-03-31
|
| Project Status |
Completed (Fiscal Year 2015)
|
| Budget Amount *help |
¥9,880,000 (Direct Cost: ¥7,600,000、Indirect Cost: ¥2,280,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥7,540,000 (Direct Cost: ¥5,800,000、Indirect Cost: ¥1,740,000)
|
|---|
| 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.
|
Report
(4 results)
Research Products
(15 results)
