The University of Southampton
University of Southampton Institutional Repository

Statistical analysis of the forced response of mistuned bladed disks using stochastic reduced basis methods

Record type: Conference or Workshop Item (Paper)

This paper is concerned with the forced response statistics of mistuned bladed disk assemblies subjected to a deterministic sinusoidal excitation. A stochastic reduced basis method (SRBM) is used to compute the statistics of the system component amplitudes. In this approach, the system response in the frequency domain is represented using a linear combination of stochastic basis vectors with undermined coefficients.
The three terms of the second-order perturbation approximation (which span the stochastic Krylov subspace) are used as basis vectors and the undetermined coefficients are evaluated using stochastic variants of the Bubnov- Galerkin Scheme. This results in explicit expressions for the response quantities in terms of the random system parameters. The statistics of the system response can hence be efficiently computed in the post-processing stage. Numerical results are presented for a model problem to demonstrate that the stochastic reduced basis formulation gives highly accurate results for the response statistical moments.

PDF bah_02b.pdf - Accepted Manuscript
Download (1MB)

Citation

Bah, Mamadou T., Nair, Prasanth B., Bhaskar, Atul and Keane, Andy J. (2002) Statistical analysis of the forced response of mistuned bladed disks using stochastic reduced basis methods At 43rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference. 22 - 25 Apr 2002. , pp. 1-10.

More information

Published date: 2002
Venue - Dates: 43rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 2002-04-22 - 2002-04-25

Identifiers

Local EPrints ID: 22260
URI: http://eprints.soton.ac.uk/id/eprint/22260
PURE UUID: 97c79d61-6e1d-4fb6-a4af-49fee5607204

Catalogue record

Date deposited: 10 Jul 2006
Last modified: 17 Jul 2017 16:22

Export record


Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×