Finite element model updating of a historical minaret via operational modal analysis

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dc.contributor.authorErcan E.
dc.contributor.authorHökelekli E.
dc.contributor.authorDemir A.
dc.contributor.authorNohutçu H.
dc.date.accessioned2019-10-26T21:17:44Z
dc.date.available2019-10-26T21:17:44Z
dc.date.issued2017
dc.departmentEge Üniversitesien_US
dc.descriptionBruel and Kjaer;Dynamic Design Solutions (DDS);Kotter Consulting Engineers;Polytec;Siemens;Structural Vibration Solutionsen_US
dc.description7th International Operational Modal Analysis Conference, IOMAC 2017 -- 10 May 2017 through 12 May 2017 -- 128320en_US
dc.description.abstractFinite element method is commonly used for analysis of historical structures. However, since material properties of historical structures are evaluated from destructive tests using empirical formulas, this approach makes the results of finite element analysis questionable. In recent years Operational Modal Analysis of historical masonry structures have found great interest because by the help of Operational Modal Analysis, the material parameters and the boundary conditions can be verified and the finite element model can be updated. The updated model is a more realistic model of the historical structures and gives more accurate results. This study describes the results of a model updating study conducted on a historical minaret. For the purposes of developing a 3-D solid model of the minaret; the dimensions, defects and material degradations in the minaret were determined in detail by making a measurement survey. For evaluation of the material properties of the minaret, nondestructive and destructive testing methods were applied. The modal analysis of the structure was done by FEM. Then, Operational Modal Analysis was carried out and dynamic properties were extracted. The results obtained from ambient vibration measurements of the minaret were used to update the finite element model of the minaret. The natural frequencies and corresponding mode shapes were determined from both theoretical and experimental modal analyses and compared with each other. A good harmony was attained between mode shapes, but differences between natural frequencies were observed. Model updating was realized via changing material parameters and boundary conditions. Finally, the more realistic finite element model of the minaret was put forward and the results were discussed.en_US
dc.identifier.endpage145en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.startpage142en_US
dc.identifier.urihttps://hdl.handle.net/11454/16418
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherInternational Operational Modal Analysis Conference (IOMAC)en_US
dc.relation.ispartofIOMAC 2017 - 7th International Operational Modal Analysis Conferenceen_US
dc.relation.publicationcategoryKonferans Öğesi - Uluslararası - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectDynamic characteristicen_US
dc.subjectHistorical masonry minareten_US
dc.subjectOMAen_US
dc.titleFinite element model updating of a historical minaret via operational modal analysisen_US
dc.typeConference Objecten_US

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