Probabilistic dynamics of mistuned bladed disc systems using Subset Simulation
Probabilistic dynamics of mistuned bladed disc systems using Subset Simulation
The work describes an assessment of subset simulation (SubSim) techniques to increase the computational efficiency for the predictions of probabilistic dynamic behavior in mistuned bladed disc systems. Subset Simulation (SubSim) is an adaptive stochastic procedure to compute efficiently small failure probabilities, which are expressed as a product of large conditional failures probabilities by introducing intermediate failure events. The original version of SubSim is used in this work to simulate samples related to intermediate failure events. A 2-DOFs model with lumped parameters identified from a finite element model is used to represent a bladed disc. The statistics associated to the maximum forced frequency response amplitudes are evaluated from different levels of the blade mistuning using stiffness perturbation in the blades. The study shows the SubSim method capture efficiently the statistical properties of the mistuned blades with less than 1\% of sample size that necessary for the traditional Monte Carlo method.
4609-4622
Katholieke Universiteit Leuven
Yuan, J.
4bcf9ce8-3af4-4009-9cd0-067521894797
Allegri, G.
8dd43a78-5f53-472f-853a-1b2fd7b129e4
Scarpa, F.
684472c3-1a28-478a-a388-5fd896986c1d
Rajasekatan, R.
85a59f10-2df2-4d27-88ce-0f804fc1bf3e
17 September 2014
Yuan, J.
4bcf9ce8-3af4-4009-9cd0-067521894797
Allegri, G.
8dd43a78-5f53-472f-853a-1b2fd7b129e4
Scarpa, F.
684472c3-1a28-478a-a388-5fd896986c1d
Rajasekatan, R.
85a59f10-2df2-4d27-88ce-0f804fc1bf3e
Yuan, J., Allegri, G., Scarpa, F. and Rajasekatan, R.
(2014)
Probabilistic dynamics of mistuned bladed disc systems using Subset Simulation.
In Proceedings of ISMA 2014 - International Conference on Noise and Vibration Engineering and USD 2014 - International Conference on Uncertainty in Structural Dynamics.
Katholieke Universiteit Leuven.
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
The work describes an assessment of subset simulation (SubSim) techniques to increase the computational efficiency for the predictions of probabilistic dynamic behavior in mistuned bladed disc systems. Subset Simulation (SubSim) is an adaptive stochastic procedure to compute efficiently small failure probabilities, which are expressed as a product of large conditional failures probabilities by introducing intermediate failure events. The original version of SubSim is used in this work to simulate samples related to intermediate failure events. A 2-DOFs model with lumped parameters identified from a finite element model is used to represent a bladed disc. The statistics associated to the maximum forced frequency response amplitudes are evaluated from different levels of the blade mistuning using stiffness perturbation in the blades. The study shows the SubSim method capture efficiently the statistical properties of the mistuned blades with less than 1\% of sample size that necessary for the traditional Monte Carlo method.
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Published date: 17 September 2014
Venue - Dates:
ISMA 2014 Conference, Leuven, Belgium, 2014-09-15 - 2014-09-19
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Local EPrints ID: 479377
URI: http://eprints.soton.ac.uk/id/eprint/479377
PURE UUID: b80bcb10-1d76-4fd1-8405-38c85a42e3d6
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Date deposited: 20 Jul 2023 17:39
Last modified: 17 Mar 2024 04:20
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Author:
J. Yuan
Author:
G. Allegri
Author:
F. Scarpa
Author:
R. Rajasekatan
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