High order sensitivity analysis of a mistuned blisk including intentional mistuning

Show simple item record

dc.identifier.uri http://dx.doi.org/10.15488/1946
dc.identifier.uri http://www.repo.uni-hannover.de/handle/123456789/1971
dc.contributor.author Pohle, Linus
dc.contributor.author Tatzko, Sebastian
dc.contributor.author Panning-von Scheidt, Lars
dc.contributor.author Wallaschek, Jörg
dc.date.accessioned 2017-09-22T12:52:56Z
dc.date.available 2017-09-22T12:52:56Z
dc.date.issued 2017
dc.identifier.citation Pohle, L.; Tatzko, S.; von Scheidt, L.P.; Wallaschek, J.: High order sensitivity analysis of a mistuned blisk including intentional mistuning. In: Journal of Theoretical and Applied Mechanics (Poland) 55 (2017), Nr. 1, S. 353-368. DOI: https://doi.org/10.15632/jtam-pl.55.1.353
dc.description.abstract Small deviations between turbine blades exist due to manufacturing tolerances or material inhomogeneities. This effect is called mistuning and usually causes increased vibration amplitudes and also a lower service life expectancy of bladed disks or so called blisks (bladed integrated disk). The major resulting problem is to estimate the maximum amplitude with respect to these deviations. Due to the probability distribution of these deviations, statistical methods are used to predict the maximum amplitude. State of the art is the Monte-Carlo simulation which is based on a high number of randomly re-arranged input parameters. The aim of this paper is to introduce a useful method to calculate the probability distribution of the maximum amplitude of a mistuned blisk with respect to the random input parameters. First, the applied reduction method is presented to initiate the sensitivity analysis. This reduction method enables the calculation of the frequency response function (FRF) of a Finite Element Model (FEM) in a reasonable calculation time. Based on the Taylor series approximation, the sensitivity of the vibration amplitude depending on normally distributed input parameters is calculated and therewith, it is possible to estimate the maximum amplitude. Calculating only a single frequency response function shows a good agreement with the results of over 1000 Monte-Carlo simulations. eng
dc.language.iso eng
dc.publisher Warsaw : Polish Society of Theoretical and Allied Mechanics
dc.relation.ispartofseries Journal of Theoretical and Applied Mechanics (Poland) 55 (2017), Nr. 1
dc.rights CC BY-NC 3.0 Unported
dc.rights.uri https://creativecommons.org/licenses/by-nc/3.0
dc.subject Mistuning eng
dc.subject Sensitivity analysis eng
dc.subject Turbine blades eng
dc.subject Finite element method eng
dc.subject Frequency response eng
dc.subject Intelligent systems eng
dc.subject Normal distribution eng
dc.subject Probability distributions eng
dc.subject Sensitivity analysis eng
dc.subject Turbine components eng
dc.subject Turbines eng
dc.subject Turbomachine blades eng
dc.subject Frequency response functions eng
dc.subject Intentional mistuning eng
dc.subject Manufacturing tolerances eng
dc.subject Material inhomogeneities eng
dc.subject Mistuning eng
dc.subject Taylor series approximation eng
dc.subject Turbine blade eng
dc.subject Vibration amplitude eng
dc.subject Monte Carlo methods eng
dc.subject.ddc 510 | Mathematik ger
dc.subject.ddc 620 | Ingenieurwissenschaften und Maschinenbau ger
dc.title High order sensitivity analysis of a mistuned blisk including intentional mistuning
dc.type Article
dc.type Text
dc.relation.issn 14292955
dc.relation.doi https://doi.org/10.15632/jtam-pl.55.1.353
dc.bibliographicCitation.issue 1
dc.bibliographicCitation.volume 55
dc.bibliographicCitation.firstPage 353
dc.bibliographicCitation.lastPage 368
dc.description.version publishedVersion
tib.accessRights frei zug�nglich

Files in this item

This item appears in the following Collection(s):

Show simple item record


Search the repository


My Account

Usage Statistics