Forced response of mistuned bladed disks: Identification and prediction

Chung Chih Lin, Marc Mignolet

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

Abstract

The present investigation focuses on both the estimation of the parameters of a structural model to represent `at best' a set of measurements of the response of a mistuned bladed disk (identification) and the determination of the statistical distribution of the amplitudes of blade vibration given the model parameters (prediction). A mixed least squares-maximum likelihood formulation is presented which is shown to recover well the true model parameters from noisy simulated response data. The prediction aspects of the problem are then investigated by relying on the newly devised combined Closed Form - Perturbation (CFP) approach. The formulation of this technique is extended to the case of both stiffness and damping mistuning and new numerical results are presented that confirm the usefulness of the CFP method in predicting the statistical distribution of the amplitudes of blade response.

Original languageEnglish (US)
Title of host publicationStructural Dynamics and Vibrations
EditorsA. Faghri, M.A. Yaghoubi
PublisherPubl by ASME
Pages135-142
Number of pages8
Edition7
ISBN (Print)0791812804
StatePublished - Jan 1 1994
EventProceedings of the 2nd Biennial European Joint Conference on Engineering Systems Design and Analysis. Part 1 (of 8) - London, Engl
Duration: Jul 4 1994Jul 7 1994

Publication series

NameAmerican Society of Mechanical Engineers, Petroleum Division (Publication) PD
Number7
Volume64

Other

OtherProceedings of the 2nd Biennial European Joint Conference on Engineering Systems Design and Analysis. Part 1 (of 8)
CityLondon, Engl
Period7/4/947/7/94

ASJC Scopus subject areas

  • Geology

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  • Cite this

    Lin, C. C., & Mignolet, M. (1994). Forced response of mistuned bladed disks: Identification and prediction. In A. Faghri, & M. A. Yaghoubi (Eds.), Structural Dynamics and Vibrations (7 ed., pp. 135-142). (American Society of Mechanical Engineers, Petroleum Division (Publication) PD; Vol. 64, No. 7). Publ by ASME.