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Research and development program for non-linear structural modeling with advanced time-temperature dependent constitutive relationshipsResults of a 20-month research and development program for nonlinear structural modeling with advanced time-temperature constitutive relationships are reported. The program included: (1) the evaluation of a number of viscoplastic constitutive models in the published literature; (2) incorporation of three of the most appropriate constitutive models into the MARC nonlinear finite element program; (3) calibration of the three constitutive models against experimental data using Hastelloy-X material; and (4) application of the most appropriate constitutive model to a three dimensional finite element analysis of a cylindrical combustor liner louver test specimen to establish the capability of the viscoplastic model to predict component structural response.
Document ID
19820008207
Document Type
Contractor Report (CR)
Authors
Walker, K. P. (United Technologies Research Center East Hartford, CT, United States)
Date Acquired
September 4, 2013
Publication Date
November 25, 1981
Subject Category
AIRCRAFT PROPULSION AND POWER
Report/Patent Number
PWA-5700-50
NASA-CR-165533
Funding Number(s)
CONTRACT_GRANT: NAS3-22055
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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