A Comprehensive Procedure to Estimate the Probability of Extreme Vibration Levels Due to Mistuning
2010 ◽
Vol 132
(11)
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Keyword(s):
A new procedure is developed to find the probabilities of extremely high amplification factors in mistuned bladed disk vibration levels, typical of events which occur rarely. While a rough estimate can be made by curve-fitting the distribution function generated in a Monte Carlo simulation, the procedure presented here can determine a much more accurate upper bound and the probabilities of amplification factors near to that bound. The procedure comprises an optimization analysis based on the conjugate gradient method and a stochastic simulation using the importance sampling method. Two examples are provided to illustrate the efficiency of the procedure, which can be 2 or 3 orders of magnitude more efficient than Monte Carlo simulations.
2011 ◽
Vol 88-89
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pp. 554-558
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Keyword(s):
2001 ◽
Vol 138
(1)
◽
pp. 96-103
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2011 ◽
Vol 189-193
◽
pp. 424-427
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2000 ◽
Vol 83-84
(1-3)
◽
pp. 443-445
2019 ◽
Vol 274
(2)
◽
pp. 759-772
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Keyword(s):
2011 ◽
Vol 26
(2)
◽
pp. 134-141
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Keyword(s):