2023 Fiscal Year Final Research Report
Movable-Nonlinearity Modeling for Successive Analyses of Very Flexible Structures
| Project/Area Number |
21K14341
|
|---|
| Research Category |
Grant-in-Aid for Early-Career Scientists
|
| Allocation Type | Multi-year Fund |
|---|
| Review Section |
Basic Section 24010:Aerospace engineering-related
|
|---|
| Research Institution | Tohoku University |
|---|
Principal Investigator |
|
|---|
| Project Period (FY) |
2021-04-01 – 2024-03-31
|
| Keywords | 大変形構造 / 流体構造連成 / 空力弾性 / 非線形有限要素法 / 風洞実験 / マルチボディダイナミクス / マルチフィジックス / 衛星航空機 |
|---|
| Outline of Final Research Achievements |
Due to the effects of natural disasters and the COVID-19 pandemic, demand for telecommunications is increasing. High altitude platform station (HAPS) aircraft flying continuously at stratosphere for several months is desired to provide high quality telecommunication. Unlike conventional aircraft, the frequency and dynamic characteristics of the aircraft change drastically due to the large static deformation. To realize the aircraft, a series of analyses will be required, including static analysis, frequency analysis, and dynamic analysis, using a numerical model (nonlinear equation of motion) that takes large deformation into account. In this study, “Moveable-Nonlinearity Modeling" that can be easily applied to the static analysis, frequency analysis, and dynamic analysis was developed. Its accuracy was experimentally validated.
|
| Free Research Field |
航空宇宙工学
|
| Academic Significance and Societal Importance of the Research Achievements |
近年は旅客機などの翼も細長化・大変形化が進行しているため，提案した解析手法は無人機のみならず，将来の有人機にも有効であり，今後の航空工学分野に大きく貢献する意義がある．
高出力発電のための風車ブレードの長大化や炉心探査するためのロボットアームの長尺化が進んでおり，多様な分野で大変形細長構造物の実用化が望まれている．これら異分野の構造物に対しても有効な提案手法は自然エネルギ・防災などの分野でも必要とされる社会的意義がある．
|
