NDLI: System reliability analysis with the response surface method

Content Provider	IEEE Xplore Digital Library
Author	Gyekenyesi, J.Z. Strack, B. Zampino, E.J. Pai, S.S.
Copyright Year	2008
Description	Author affiliation: N&R Eng., OH (Gyekenyesi, J.Z.; Strack, B.) \|\| Glenn Res. Center, NASA, Cleveland, OH (Zampino, E.J.; Pai, S.S.)
Abstract	The reliability of a simple turbomachinery model was calculated to demonstrate the application of a newly developing system integration tool, Probabilistic Design and Analysis Framework(PRODAF), along with efficient probabilistic methods using a response surface method. The model represents a system consisting of hypothetical turbine components. The parts include a blade, disk, and shaft with an applied angular velocity. All the components were modeled with the properties of the nickel alloy, Inconel 718. A response surface was calculated for the system of components to improve probabilistic computational efficiency. In addition, a fast probability integration method, Advanced First Order Reliability Method (AFORM), was used for the probabilistic analysis in order to provide an efficient analysis as possible. Geometric dimensions, the applied load, and material yield strength were varied for this study. The probability of failure was determined using the maximum first principal stress response and the material yield strength. A simple G function using the difference between strength and loading stress was used to determine failure limits. The probabilistic sensitivity of the failure response relative to the individual variables was determined also with material yield strength having the greatest influence. The model was recreated with every iteration of the probabilistic analysis in order to vary the geometry. As a result, the response surface method has a significant impact on improving computational efficiency and enabling reliability analysis with rapid turnaround.
Starting Page	161
Ending Page	165
File Size	380346
Page Count	5
File Format	PDF
ISBN	9781424414604
ISSN	0149144X
DOI	10.1109/RAMS.2008.4925788
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-01-28
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Reliability Response surface methodology Computational efficiency Stress Turbomachinery Turbines Blades Shafts Angular velocity Nickel alloys PRODAF Response Surface Method Complex systems reliability
Content Type	Text
Resource Type	Article

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