Probabilistic Method to Compute the Optimal Slip Load for a Mistuned Bladed Disk Assembly With Friction Dampers

[+] Author and Article Information
S. Chen, A. Sinha

Department of Mechanical Engineering, The Pennsylvania State University, University Park, PA 16802

J. Vib. Acoust 112(2), 214-221 (Apr 01, 1990) (8 pages) doi:10.1115/1.2930115 History: Received October 01, 1988; Online June 17, 2008


In this paper, an analytical technique has been developed to compute the statistics of forced response of a mistuned bladed disk assembly with friction dampers (blade-to-blade or blade-to-ground). The method is based on the statistical linearization approach and predicts the probability distribution function of a blade’s amplitude. The validity of this technique has been corroborated by comparison with the results from numerical simulations. Using this technique, the optimal value of the slip load at the friction joint has been computed to minimize the probability that a blade’s amplitude will exceed a critical value.

Copyright © 1990 by The American Society of Mechanical Engineers
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