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Cyclic fatigue analysis of rocket thrust chambers. Volume 1: OFHC copper chamber low cycle fatigueA three-dimensional finite element elasto-plastic strain analysis was performed for the throat section of a regeneratively cooled rocket combustion chamber. The analysis employed the RETSCP finite element computer program. The analysis included thermal and pressure loads, and the effects of temperature dependent material properties, to determine the strain range corresponding to the chamber operating cycle. The analysis was performed for chamber configuration and operating conditions corresponding to a hydrogen-oxygen combustion chamber which was fatigue tested to failure. The computed strain range at typical chamber operating conditions was used in conjunction with oxygen-free, high-conductivity (OHFC) copper isothermal fatigue test data to predict chamber low-cycle fatigue life.
Document ID
19740026129
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Miller, R. W. (Atkins and Merrill, Inc. Ashland, MA, United States)
Date Acquired
September 3, 2013
Publication Date
June 1, 1974
Subject Category
Propulsion Systems
Report/Patent Number
NASA-CR-134641-VOL-1
Accession Number
74N34242
Funding Number(s)
CONTRACT_GRANT: NAS3-17807
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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