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Viscoplastic analysis of an experimental cylindrical thrust chamber linerA viscoplastic stress-strain analysis of an experimental cylindrical thrust chamber is presented. A viscoelastic constitutive model incorporating a single internal state variable that represents kinematic hardening was employed to investigate whether such a viscoplastic model could predict the experimentally observed behavior of the thrust chamber. Two types of loading cycles were considered: a short cycle of 3.5-s duration that corresponded to the experiments, and an extended loading cycle of 485.1 s duration that is typical of the Space Shuttle Main Engine (SSME) operating cycle. The analysis qualitatively replicated the deformation behavior of the component as observed in experiments designed to simulate SSME operating conditions. The analysis also showed that the mode and location of failure in the component may depend on the loading cycle. The results indicate that using viscoplastic models for structural analysis can lead to a more realistic life assessment of thrust chambers.
Document ID
19920045428
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Arya, Vinod K.
(Toledo, University OH, United States)
Arnold, Steven M.
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
August 15, 2013
Publication Date
March 1, 1992
Publication Information
Publication: AIAA Journal
Volume: 30
ISSN: 0001-1452
Subject Category
Structural Mechanics
Accession Number
92A28052
Distribution Limits
Public
Copyright
Other

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