- Tytuł:
- Fatigue life stimation of structural element of MI-24 Helicopter
- Autorzy:
-
Baraniecki, R.
Kaniewska, M. - Powiązania:
- https://bibliotekanauki.pl/articles/247128.pdf
- Data publikacji:
- 2011
- Wydawca:
- Instytut Techniczny Wojsk Lotniczych
- Tematy:
-
fatigue life
damage
S-N curve
spectrum loads
numerical calculations - Opis:
- Operated helicopter is submitted to varying loads spectrum. Important, for the sake of assurance structure integrity, is definition of the actual value of loads which act on individual structure element. The object of this analysis was the Mi-24 helicopter swashplate lever arm. Life estimation of this element with analytical method, for the sake of complicated geometry, can be problematical. It would be necessary to use considerable generalization which would certainly decrease results reliability. Numerical analysis allows one to create arbitrary shapes but it is necessary to properly define boundary condition. These work presents methodology for determining fatigue life of the structure element with use of strain gauges, which serve to define the real flight loads. Next step was to determine accurate element shape with the aid of 3D scanner ATOSIII. Geometry was imaged in CAD/CAM environment. After importing the geometry model to MSC.Patran the numerical model was developed. The analysis was done in the scope of linear static analysis. Estimation of fatigue life was done with the aid of MSC.Fatigue computer program. Fatigue life was estimated according to the Palmgren's - Miner's cumulation damage rule. Test was done in order to define potential fatigue damage sites and defining fatigue life of element. That allows verifying plane overhaul life and fully using helicopters potential next to keeping requested level of safety.
- Źródło:
-
Journal of KONES; 2011, 18, 2; 9-15
1231-4005
2354-0133 - Pojawia się w:
- Journal of KONES
- Dostawca treści:
- Biblioteka Nauki
Artykuł