Computation of the optimal normal load for a mistuned and frictionally damped bladed disk assembly under different types of excitation

D. Cha, Alok Sinha

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Using non-dimensional variables, the performances of friction dampers of a mistuned bladed disk assembly are examined for different types of excitation: white noise excitation, independent narrow band random excitation and sinusoidal excitation with unknown amplitudes. Based on the harmonic balance method, an analytical technique is developed to compute the statistics of response for sinusoidal excitation with unknown amplitudes. The performances of blade-to-blade and blade-to-ground dampers are compared under different types of excitation. It is found that non-dimensional optimal normal loads of friction dampers are almost independent of the nature of excitation. Therefore, optimal normal loads of friction dampers can be chosen without any knowledge of the nature of excitation.

Original languageEnglish (US)
Title of host publicationManufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Print)9780791878538
DOIs
StatePublished - Jan 1 2001
EventASME Turbo Expo 2001: Power for Land, Sea, and Air, GT 2001 - New Orleans, LA, United States
Duration: Jun 4 2001Jun 7 2001

Publication series

NameProceedings of the ASME Turbo Expo
Volume4

Other

OtherASME Turbo Expo 2001: Power for Land, Sea, and Air, GT 2001
CountryUnited States
CityNew Orleans, LA
Period6/4/016/7/01

Fingerprint

Friction
White noise
Statistics

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Cha, D., & Sinha, A. (2001). Computation of the optimal normal load for a mistuned and frictionally damped bladed disk assembly under different types of excitation. In Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award (Proceedings of the ASME Turbo Expo; Vol. 4). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/2001-GT-0278
Cha, D. ; Sinha, Alok. / Computation of the optimal normal load for a mistuned and frictionally damped bladed disk assembly under different types of excitation. Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award. American Society of Mechanical Engineers (ASME), 2001. (Proceedings of the ASME Turbo Expo).
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abstract = "Using non-dimensional variables, the performances of friction dampers of a mistuned bladed disk assembly are examined for different types of excitation: white noise excitation, independent narrow band random excitation and sinusoidal excitation with unknown amplitudes. Based on the harmonic balance method, an analytical technique is developed to compute the statistics of response for sinusoidal excitation with unknown amplitudes. The performances of blade-to-blade and blade-to-ground dampers are compared under different types of excitation. It is found that non-dimensional optimal normal loads of friction dampers are almost independent of the nature of excitation. Therefore, optimal normal loads of friction dampers can be chosen without any knowledge of the nature of excitation.",
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Cha, D & Sinha, A 2001, Computation of the optimal normal load for a mistuned and frictionally damped bladed disk assembly under different types of excitation. in Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award. Proceedings of the ASME Turbo Expo, vol. 4, American Society of Mechanical Engineers (ASME), ASME Turbo Expo 2001: Power for Land, Sea, and Air, GT 2001, New Orleans, LA, United States, 6/4/01. https://doi.org/10.1115/2001-GT-0278

Computation of the optimal normal load for a mistuned and frictionally damped bladed disk assembly under different types of excitation. / Cha, D.; Sinha, Alok.

Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award. American Society of Mechanical Engineers (ASME), 2001. (Proceedings of the ASME Turbo Expo; Vol. 4).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Cha D, Sinha A. Computation of the optimal normal load for a mistuned and frictionally damped bladed disk assembly under different types of excitation. In Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award. American Society of Mechanical Engineers (ASME). 2001. (Proceedings of the ASME Turbo Expo). https://doi.org/10.1115/2001-GT-0278