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Analysis of deformation of mistuned bladed disks with friction and random crystal anisotropy orientation using gradient-based polynomial chaos expansion
journal contribution
posted on 2023-06-06, 09:40 authored by Rahul Rajasekharan Nair, Yevgen PetrovYevgen PetrovSingle crystal blades used in high pressure turbine bladed disks of modern gas-turbine engines exhibit material anisotropy. In this paper the sensitivity analysis is performed to quantify the effects of blade material anisotropy orientation on deformation of a mistuned bladed disk under static centrifugal load. For a realistic, high fidelity model of a bladed disk both: (i) linear, and (ii) non-linear friction contact conditions at blade roots and shrouds are considered. The following two kinds of analysis are performed: (i) local sensitivity analysis, based on first order derivatives of system response w.r.t design parameters, and (ii) statistical analysis using polynomial chaos expansion. The polynomial chaos expansion is used to transfer the uncertainty in random input parameters to uncertainty in static deformation of the bladed disk. An effective strategy, using gradient information, is proposed to address the “curse of dimensionality” problem associated with statistical analysis of realistic bladed disk.
History
Publication status
- Published
File Version
- Accepted version
Journal
ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition: Volume 7C: Structures and DynamicsPublisher
American Society of Mechanical EngineersExternal DOI
Event name
ASME Turbo Expo 2018: Turbomachinery Technical Conference and ExpositionEvent location
Oslo, NorwayEvent type
conferenceEvent date
June 11–15, 2018ISBN
9780791851159Department affiliated with
- Engineering and Design Publications
Notes
ISBN 9780791851159Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2018-07-16First Open Access (FOA) Date
2019-08-30First Compliant Deposit (FCD) Date
2018-07-15Usage metrics
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