A new method has been developed for sensitivity calculations of modal characteristics of bladed disks made of anisotropic materials. The method allows the determination of the sensitivity of the natural frequencies and mode shapes of mistuned bladed disks with respect to anisotropy angles that define the crystal orientation of the monocrystalline blades using full-scale finite element models. An enhanced method is proposed to provide high accuracy for the sensitivity analysis of mode shapes. An approach has also been developed for transforming the modal sensitivities to coordinate systems (CS) used in industry for description of the blade anisotropy orientations. The capabilities of the developed methods are demonstrated on examples of a single blade and a mistuned realistic bladed disk finite element models. The modal sensitivity of mistuned bladed disks to anisotropic material orientation is thoroughly studied.
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February 2019
Research-Article
High-Fidelity Sensitivity Analysis of Modal Properties of Mistuned Bladed Disks Regarding Material Anisotropy
Adam Koscso,
Adam Koscso
School of Engineering and Informatics,
University of Sussex,
Brighton BN1 9QT, UK
e-mail: adam.koscso@sussex.ac.uk
University of Sussex,
Brighton BN1 9QT, UK
e-mail: adam.koscso@sussex.ac.uk
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E. P. Petrov
E. P. Petrov
School of Engineering and Informatics,
University of Sussex,
Brighton BN1 9QT, UK
e-mail: y.petrov@sussex.ac.uk
University of Sussex,
Brighton BN1 9QT, UK
e-mail: y.petrov@sussex.ac.uk
Search for other works by this author on:
Adam Koscso
School of Engineering and Informatics,
University of Sussex,
Brighton BN1 9QT, UK
e-mail: adam.koscso@sussex.ac.uk
University of Sussex,
Brighton BN1 9QT, UK
e-mail: adam.koscso@sussex.ac.uk
Guido Dhondt
E. P. Petrov
School of Engineering and Informatics,
University of Sussex,
Brighton BN1 9QT, UK
e-mail: y.petrov@sussex.ac.uk
University of Sussex,
Brighton BN1 9QT, UK
e-mail: y.petrov@sussex.ac.uk
Manuscript received June 22, 2018; final manuscript received July 2, 2018; published online November 30, 2018. Editor: Jerzy T. Sawicki.
J. Eng. Gas Turbines Power. Feb 2019, 141(2): 021036 (11 pages)
Published Online: November 30, 2018
Article history
Received:
June 22, 2018
Revised:
July 2, 2018
Citation
Koscso, A., Dhondt, G., and Petrov, E. P. (November 30, 2018). "High-Fidelity Sensitivity Analysis of Modal Properties of Mistuned Bladed Disks Regarding Material Anisotropy." ASME. J. Eng. Gas Turbines Power. February 2019; 141(2): 021036. https://doi.org/10.1115/1.4040900
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