This paper highlights some engine non-linearities that can affect both performance and robustness of aero engines. It pays particular attention to non-linearities generated at the stator vane contact end joints. These non-linearities resulting from friction contact joints affect the vane modeshapes, damping and forced response. This work proposes upper and lower bound solutions based on vane end restraints non-linearities to predict conservative forced response of stator vanes. Some non-linearities such as those caused by mistuning can be beneficial to the component and system. There are also non-linearities that can be detrimental to engine performance, robustness and reliability. Moreover, it proposes and discusses the concept of temporal HCF or CCF lifing method. Recent developments in FE, CFD, mistuning, forced response and probabilistic codes can help to create more integrated design tools that incorporate time-dependent non-linearities in the lifing of aero engine components. Computations performed here demonstrated some level of component virtual testing. These analyses are important component virtual testing that will be gradually extended to whole aero engine virtual testing.
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ASME Turbo Expo 2007: Power for Land, Sea, and Air
May 14–17, 2007
Montreal, Canada
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
0-7918-4794-2
PROCEEDINGS PAPER
Non-Linear Aeromechanical Behaviour of Axial Core Compressor Stator Vanes Available to Purchase
Caetano Peng
Caetano Peng
Rolls-Royce Plc., Derby, UK
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Caetano Peng
Rolls-Royce Plc., Derby, UK
Paper No:
GT2007-27580, pp. 465-471; 7 pages
Published Online:
March 10, 2009
Citation
Peng, C. "Non-Linear Aeromechanical Behaviour of Axial Core Compressor Stator Vanes." Proceedings of the ASME Turbo Expo 2007: Power for Land, Sea, and Air. Volume 5: Turbo Expo 2007. Montreal, Canada. May 14–17, 2007. pp. 465-471. ASME. https://doi.org/10.1115/GT2007-27580
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