NASA/TM-108490, Ahmed, R., Analysis of Stress Concentration in the Dutton Groove Regions of the Super Lightweight External Tank, Structures and Dynamics Laboratory, Science and Engineering Directorate NASA Marshall Space Flight Center, AL 35812Prepared by Structures and Dynamics Laboratory, Science and Engineering Directorate., May 1995, pp. 35, Format(s): PDF 903k |
Because the 2195 aluminum-lithium material of the super lightweight external tank (SLWTET) has a lower toughness than the 2219 aluminum used in previous ET's, careful attention must be paid to stress concentrations. This report details the analysis performed on some of the stress concentrations in the orthogrid panels of the liquid hydrogen tank.
| Keywords: | external tank, liquid hydrogen tank, stress concentration, nonlinear analysis, aluminum-lithium |
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| CASI Document ID Number: | 95N30328 |
| Subjects: | Engineering: Structural Mechanics: Stress Analysis |
| ID Code: | 265 |
| Deposited On: | 26 June 2002 |