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Chapter
Apr 26, 2012

Probabilistic Structural Evaluation of Uncertainties in Radiator Sandwich Panel Design

Publication: Earth & Space 2006: Engineering, Construction, and Operations in Challenging Environment

Abstract

The Jupiter Icy Moons Orbiter (JIMO) Space System is part of the NASA's Prometheus Program. As part of the JIMO engineering team at NASA Glenn Research Center, the structural integrity of the JIMO Heat Rejection Subsystem (HRS) is evaluated. An initial goal of this study was to investigate the use of sensitivity analysis results to determine the relative importance of the input variables on the structural responses of the radiator panel. The desire was to let the sensitivity analysis information identify the important parameters. The probabilistic structural performance evaluation of a HRS radiator sandwich panel was performed. The radiator panel structural performance was assessed in the presence of uncertainties in the loading, fabrication process variables, and material properties. The stress and displacement contours of the deterministic structural analysis at mean probability was performed and results presented. It is followed by a probabilistic evaluation to determine the effect of the primitive variables on the radiator panel structural performance. Based on uncertainties in material properties, structural geometry and loading, the results of the displacement and stress analysis are used as an input file for the probabilistic analysis of the panel. Consequently, design critical material and geometric parameters of the considered sandwich panel are identified.

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Go to Earth & Space 2006
Earth & Space 2006: Engineering, Construction, and Operations in Challenging Environment
Pages: 1 - 8

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Published online: Apr 26, 2012

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Latife Kuguoglu [email protected]
Aerospace Engineer, QSS Group Inc., NASA Glenn Research Center, MS:GES-QSS, 21000 Brookpark Road, Cleveland Ohio 44135. E-mail: [email protected]
Damian Ludwiczak [email protected]
Senior Aerospace Engineer, NASA Kennedy Space Center. E-mail: [email protected]

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