Localized Thermal Buckling Due to Hot Streaks in a Combustor Liner

Autor:	W. Z. Zhuang, N. S. Swansson
Rok vydání:	2000
Předmět:	Gas turbines Materials science Mechanical Engineering Stress–strain curve Aerospace Engineering Thermal buckling Mechanics Nonlinear system Fuel Technology Buckling Space and Planetary Science Combustor Louver Failure mode and effects analysis
Zdroj:	Journal of Propulsion and Power. 16:661-665
ISSN:	1533-3876 0748-4658
DOI:	10.2514/2.5625
Popis:	Localized thermal buckling due to hot streaks at the louver lip is a common failure mode of louver-type combustors in some gas turbine engines. Investigations of the localized buckling of louvers under engine service condition using nonlinear Ž nite element methods are described. Simulated buckling modes from buckling eigenvalue analysis were used to deŽ ne the initial shape for analysis of cyclic inelastic stress and strain responses. Inelastic strain components were obtained to provide input for thermo–mechanical fatigue lifetime prediction of the liners using the strain-range partitioningmethod.
Databáze:	OpenAIRE
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