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Structural optimization of an alternate design for the Space Shuttle solid rocket booster field jointA structural optimization procedure is used to determine the shape of an alternate design for the Shuttle's solid rocket booster field joint. In contrast to the tang and clevis design of the existing joint, this alternate design consists of two flanges bolted together. Configurations with 150 studs of 1 1/8 in diameter and 135 studs of 1 3/16 in diameter are considered. Using a nonlinear programming procedure, the joint weight is minimized under constraints on either von Mises or maximum normal stresses, joint opening and geometry. The procedure solves the design problem by replacing it by a sequence of approximate (convex) subproblems; the pattern of contact between the joint halves is determined every few cycles by a nonlinear displacement analysis. The minimum weight design has 135 studs of 1 3/16 in diameter and is designed under constraints on normal stresses. It weighs 1144 lb per joint more than the current tang and clevis design.
Document ID
19870046280
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Barthelemy, Jean-Francois M.
(NASA Langley Research Center Hampton, VA, United States)
Rogers, James L., Jr.
(NASA Langley Research Center Hampton, VA, United States)
Chang, Kwan J.
(PRC Kentron, Inc. Hampton, VA, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1987
Subject Category
Structural Mechanics
Report/Patent Number
AIAA PAPER 87-0702
Accession Number
87A33554
Distribution Limits
Public
Copyright
Other

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