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Optimal search for worst mistuning patterns in mistuned bladed discs based on large-scale finite element models
A method for searching For the worst frequency mistuning patterns (providing the highest response levels) in bladed disc assemblies is described. The method is intended for use with finite element models having a large number of degrees of freedom that could only be used currently for tuned bladed discs. The problem is formulated and solved as an optimization problem with the use of information about the sensitivity of maximum response levels with respect to mistuning variation. An effective analytical approach is developed to calculate the sensitivity coefficients without a significant increase in computational effort. Numerical studies are carried out for realistic finite element models of a bladed disc assembly to illustrate the method
History
Publication status
- Published
Issue
6Volume
2000Page range
65-76Presentation Type
- paper
Event name
Seventh International Conference on Vibrations in Rotating MachineryEvent location
Nottingham, EnglandEvent type
conferenceEvent date
Sep 12-14, 2000ISBN
1356-1448 1-86058-273-7Series
Imeche Conference TransactionsDepartment affiliated with
- Engineering and Design Publications
Full text available
- No
Peer reviewed?
- Yes
Legacy Posted Date
2012-11-27Usage metrics
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