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Probabilistic structural analysis methods of hot engine structuresDevelopment of probabilistic structural analysis methods for hot engine structures at Lewis Research Center is presented. Three elements of the research program are: (1) composite load spectra methodology; (2) probabilistic structural analysis methodology; and (3) probabilistic structural analysis application. Recent progress includes: (1) quantification of the effects of uncertainties for several variables on high pressure fuel turbopump (HPFT) turbine blade temperature, pressure, and torque of the space shuttle main engine (SSME); (2) the evaluation of the cumulative distribution function for various structural response variables based on assumed uncertainties in primitive structural variables; and (3) evaluation of the failure probability. Collectively, the results demonstrate that the structural durability of hot engine structural components can be effectively evaluated in a formal probabilistic/reliability framework.
Document ID
19890018659
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Chamis, C. C. (NASA Lewis Research Center Cleveland, OH, United States)
Hopkins, D. A. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 6, 2013
Publication Date
June 1, 1989
Subject Category
Structural Mechanics
Report/Patent Number
NAS 1.15:102091
E-4855
NASA-TM-102091
Meeting Information
Meeting: International Gas Turbine and Aeroengine Congress and Exposition
Location: Toronto, Ontario
Country: Canada
Start Date: June 4, 1989
End Date: June 8, 1989
Sponsors: ASME
Accession Number
89N28030
Funding Number(s)
PROJECT: RTOP 553-13
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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