Structural Analysis of Helios Filament-Wound Tanks Subjected to Internal Pressure and Cooling
Ko, William L. (2005) Structural Analysis of Helios Filament-Wound Tanks Subjected to Internal Pressure and Cooling. Technical Report NASA/TM-2005-212855, Research Engineering, NASA Dryden Flight Research Center.
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Abstract
A finite-element stress analysis is performed on Helios filament-wound hydrogen tanks to examine the stress field and effect of end dome geometry on the stress field. Each tank is composed of a central circular cylindrical section with either geodesic or hemispherical end domes, which have metallic polar bosses. The tanks are subjected to combined and separate internal pressure and temperature loading conditions, and the stress contributions of each loading component are examined. The tank-wall–polar-boss interfacial meridional tensile stress in the hemispherical dome is found to be approximately 27 percent lower than that in the geodesic dome. The effects of both material anisotropy and the aluminum lining on the intensities of tensile meridional stress at the tank-wall–polar-boss bonding interface are examined.
| EPrint Type: | NASA Technical Memorandum |
|---|---|
| Keywords: | Filament-wound tanks, Geodesic dome tank, Hemispherical dome tank, Pressure and temperature loading, Structural performance |
| Subjects: | Aircraft/Project: Helios (31 - 39) Engineering: (39) Structural Mechanics |
| ID Code: | 380 |
| Deposited On: | 03 Febuary 2005 |
| Additional Information: | 40 pages. Ko, NASA Dryden Flight Research Center. |
