Analysis of Stress Concentration at Holes in Components Made of 2195 Aluminum-Lithium

NASA/TP-3554, Ahmed, R., Analysis of Stress Concentration at Holes in Components Made of 2195 Aluminum-Lithium, Structures and Dynamics Laboratory, Science and Engineering Directorate. NASA Marshall Space Flight Center, AL 35812, May 1995, pp. 32, Format(s): PDF 808k

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Because the 2195 aluminum-lithium of the super lightweight external tank (SLWT ET) has a lower toughness than the 2219 aluminum used in previous ET's, careful attention must be paid to stress concentration in the SLWT ET. This report details the initial analysis performed by NASA to determine the material properties required to ensure structural integrity in these critical areas.

Keywords:	external tank, liquid hydrogen tank, stress concentration, plasticity, nonlinear analysis, aluminum-lithium
CASI Document ID Number:	95N30613
Subjects:	Engineering: Structural Mechanics: Stress Analysis
ID Code:	271
Deposited On:	26 June 2002