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Probabilistic analysis of bladed turbine disks and the effect of mistuningProbabilistic assessment of the maximum blade response on a mistuned rotor disk is performed using the computer code NESSUS. The uncertainties in natural frequency, excitation frequency, amplitude of excitation and damping have been included to obtain the cumulative distribution function (CDF) of blade responses. Advanced mean value first order analysis is used to compute CDF. The sensitivities of different random variables are identified. Effect of the number of blades on a rotor on mistuning is evaluated. It is shown that the uncertainties associated with the forcing function parameters have significant effect on the response distribution of the bladed rotor.
Document ID
19900042272
Document Type
Conference Paper
Authors
Shah, Ashwin (NASA Lewis Research Center Cleveland, OH, United States)
Nagpal, V. K. (Scerdrup Technology, Inc. Brookpark, OH, United States)
Chamis, C. C. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1990
Subject Category
MECHANICAL ENGINEERING
Report/Patent Number
AIAA PAPER 90-1097
Meeting Information
AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference(Long Beach, CA)
Distribution Limits
Public
Copyright
Other