This paper is focused on the analysis of effects of mistuning on the forced response of gas turbine engine bladed disks vibrating in the frequency ranges corresponding to higher modes. For high modes considered here, the blade aerofoils are deformed during vibrations and the blade mode shapes differ significantly from beam mode shapes. A model reduction technique is developed for the computationally efficient and accurate analysis of forced response for bladed disks vibrating in high-frequency ranges. The high-fidelity finite element (FE) model of a tuned bladed disk sector is used to provide primary information about dynamic properties of a bladed disk, and the blade mistuning is modeled by specially defined mistuning matrices. The forced response displacement and stress amplitude levels are studied. The effects of different types of mistuning are examined, and the existence of high amplifications of mistuned forced response levels is shown for high-mode vibrations: in some cases, the resonance peak response of a tuned structure can be lower than out-of-resonance amplitudes of its mistuned counterpart.
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November 2016
Research-Article
Forced Response Analysis of High-Mode Vibrations for Mistuned Bladed Disks With Effective Reduced-Order Models
Yongliang Duan,
Yongliang Duan
College of Energy and Power Engineering,
Nanjing University of Aeronautics
and Astronautics,
Nanjing 210016, China
e-mail: tracy_duan@nuaa.edu.cn
Nanjing University of Aeronautics
and Astronautics,
Nanjing 210016, China
e-mail: tracy_duan@nuaa.edu.cn
Search for other works by this author on:
Chaoping Zang,
Chaoping Zang
College of Energy and Power Engineering,
Nanjing University of Aeronautics
and Astronautics,
Nanjing 210016, China
e-mail: c.zang@nuaa.edu.cn
Nanjing University of Aeronautics
and Astronautics,
Nanjing 210016, China
e-mail: c.zang@nuaa.edu.cn
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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:
Yongliang Duan
College of Energy and Power Engineering,
Nanjing University of Aeronautics
and Astronautics,
Nanjing 210016, China
e-mail: tracy_duan@nuaa.edu.cn
Nanjing University of Aeronautics
and Astronautics,
Nanjing 210016, China
e-mail: tracy_duan@nuaa.edu.cn
Chaoping Zang
College of Energy and Power Engineering,
Nanjing University of Aeronautics
and Astronautics,
Nanjing 210016, China
e-mail: c.zang@nuaa.edu.cn
Nanjing University of Aeronautics
and Astronautics,
Nanjing 210016, China
e-mail: c.zang@nuaa.edu.cn
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
Contributed by the Structures and Dynamics Committee of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received April 1, 2016; final manuscript received April 27, 2016; published online June 1, 2016. Editor: David Wisler.
J. Eng. Gas Turbines Power. Nov 2016, 138(11): 112502 (12 pages)
Published Online: June 1, 2016
Article history
Received:
April 1, 2016
Revised:
April 27, 2016
Citation
Duan, Y., Zang, C., and Petrov, E. P. (June 1, 2016). "Forced Response Analysis of High-Mode Vibrations for Mistuned Bladed Disks With Effective Reduced-Order Models." ASME. J. Eng. Gas Turbines Power. November 2016; 138(11): 112502. https://doi.org/10.1115/1.4033513
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