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High-fidelity sensitivity analysis of modal properties of mistuned bladed disks regarding material anisotropy

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journal contribution
posted on 2023-06-09, 14:10 authored by Adam Koscso, Guido Dhondt, Yevgen PetrovYevgen Petrov
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 fullscale 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 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.

History

Publication status

  • Published

File Version

  • Accepted version

Journal

Journal of Engineering for Gas Turbines And Power

ISSN

0742-4795

Publisher

American Society of Mechanical Engineers

Issue

2

Volume

141

Page range

021036 1-11

Department affiliated with

  • Engineering and Design Publications

Research groups affiliated with

  • Dynamics, Control and Vehicle Research Group Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2018-07-16

First Open Access (FOA) Date

2019-05-30

First Compliant Deposit (FCD) Date

2018-07-15

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