Identification of Structural Parameters in Mistuned Bladed Disks

[+] Author and Article Information
Marc P. Mignolet

Dept. of Mechanical and Aerospace Engineering, Arizona State University, Tempe, AZ 85287-6106

Chung-Chih Lin

Ford Motor Company, Dearborn, MI

J. Vib. Acoust 119(3), 428-438 (Jul 01, 1997) (11 pages) doi:10.1115/1.2889742 History: Received May 01, 1994; Online February 26, 2008


The present investigation focused on the estimation of the parameters of a structural model to represent “at best” a set of measurements of the steady state response of a mistuned bladed disk. The applicability of the least squares and maximum likelihood approaches to the identification of the bladed disk model from this data is first investigated. The advantages and drawbacks of these techniques motivate the introduction of a new mixed least squares-maximum likelihood formulation which is shown to recover well the true model parameters from noisy simulated response data.

Copyright © 1997 by The American Society of Mechanical Engineers
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