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Statistical Distribution of the Peak Maximum Amplitude of the Forced Response of a Mistuned Bladed Disk: Some Investigations and Applications of Neural Networks

[+] Author Affiliations
Alok Sinha

Pennsylvania State University, University Park, PA

Paper No. GT2006-90088, pp. 739-747; 9 pages
doi:10.1115/GT2006-90088
From:
  • ASME Turbo Expo 2006: Power for Land, Sea, and Air
  • Volume 5: Marine; Microturbines and Small Turbomachinery; Oil and Gas Applications; Structures and Dynamics, Parts A and B
  • Barcelona, Spain, May 8–11, 2006
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 0-7918-4240-1 | eISBN: 0-7918-3774-2
  • Copyright © 2006 by ASME

abstract

This paper examines the nature of the statistical distribution of the peak maximum amplitude of the forced response of a mistuned bladed disk. Monte Carlo simulations are performed for a range of values of the structural coupling between blades and the standard deviation of mistuning. First, it is determined if the statistical distribution of a peak maximum amplitude can be called three-parameter Weibull in general. Next, using a neural network, a functional relationship between the statistics of the peak maximum amplitude ;e.g., parameters of Weibull distribution, statistical moments, 99 percentile amplitude, and input parameters (structural coupling between blades and standard deviation of mistuning) is developed.

Copyright © 2006 by ASME

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