In:
Eksploatacja i Niezawodność – Maintenance and Reliability, Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne, Vol. 21, No. 3 ( 2019-9-30), p. 530-538
Abstract:
Fatigue crack propagation affects the operational reliability of engine turbo-fan blades. In this article, we integrate a Kriging
regression model and a distributed collaborative response surface method (DCRSM) for the reliability assessment of turbo-fan blades, considering the relevant uncertainty. Following a series of deterministic analyses, such as steady-state aerodynamic
analysis, harmonic response analysis and Campbell diagram, and based on the assumption that vibration stress is mainly from aerodynamic load, the fatigue strength is calculated for turbo-fan blades under coupling aerodynamic forces, according to a
modified Goodman curve of titanium-alloy. Giving consideration to the uncertainty of the resonance frequencies and material properties, the fatigue strength of the turbo-fan blade is evaluated, including probabilistic analysis and sensitivity analysis. In the
case study analyzed, the conclusions are that the fatigue strength reliability reaches 96.808% with confidence level of 0.95 for the turbo-fan blade under the coupling aerodynamic forces, and the first three-order resonant frequencies are found to have important
influence on the fatigue performance of turbo-fan blades.
Type of Medium:
Online Resource
ISSN:
1507-2711
,
2956-3860
Uniform Title:
Ocena niezawodności wytrzymałości zmęczeniowej łopatek turbowentylatora rozproszoną metodą powierzchni odpowiedzi z wykorzystaniem krigingu
DOI:
10.17531/ein.2019.3.20
Language:
Polish
Publisher:
Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne
Publication Date:
2019
detail.hit.zdb_id:
2257067-6
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