Please use this identifier to cite or link to this item:
https://hdl.handle.net/20.500.14279/9834
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Dertimanis, Vasilis | - |
dc.date.accessioned | 2017-02-23T10:29:30Z | - |
dc.date.available | 2017-02-23T10:29:30Z | - |
dc.date.issued | 2013-11 | - |
dc.identifier.citation | JVC/Journal of Vibration and Control, 2013, vol. 19, no. 15, pp. 2270-2284 | en_US |
dc.identifier.issn | 17412986 | - |
dc.identifier.uri | https://hdl.handle.net/20.500.14279/9834 | - |
dc.description.abstract | One of the most important issues faced in parametric time-domain identification and subsequent experimental/operational modal analysis is the correct estimation of model order, which in turn determines the number of structural vibration modes. The aim of this study is to provide a quantitative and physically meaningful framework for model order assessment that is characterized by global applicability, in the sense of implementation in both state-space and transfer function model representations. To this end and under the assumption of stationary wideband excitation, a novel dispersion analysis scheme is proposed for the quantification of every mode's relative importance to the total stochastic response, which is based on a modal decomposition of the covariance matrix. Subsequently, after defining the modal dispersion matrix, a corresponding metric is introduced and used either as a stand alone tool for model order assessment, or as an extension of existing tools, such as stabilization diagrams. The method is validated through both simulated (NASA Mini-Mast truss) and experimental (suspended steel subframe flexible structure) identification problems, for which a subspace and a prediction-error estimation method are utilized and compared under the proposed quantitative indices. Moreover, performance comparisons with other energy-based metrics are also reported. The results indicate that the proposed method can be effectively used in parametric time-domain structural identification, for both order assessment and comparison of diverse model-based estimation methods. | en_US |
dc.format | en_US | |
dc.language.iso | en | en_US |
dc.relation.ispartof | Journal of Vibration and Control | en_US |
dc.rights | © The Author(s) | en_US |
dc.subject | Covariance matrix | en_US |
dc.subject | Dispersion analysis | en_US |
dc.subject | Energy analysis | en_US |
dc.subject | Experimental/operational modal analysis | en_US |
dc.subject | Model order estimation | en_US |
dc.subject | Model reduction | en_US |
dc.subject | Spurious modesst | en_US |
dc.subject | Stabilization diagrams | en_US |
dc.subject | State-space | en_US |
dc.subject | Structural identification | en_US |
dc.title | On the use of dispersion analysis for model assessment in structural identification | en_US |
dc.type | Article | en_US |
dc.collaboration | Cyprus University of Technology | en_US |
dc.subject.category | Civil Engineering | en_US |
dc.journals | Open Access | en_US |
dc.country | Cyprus | en_US |
dc.subject.field | Engineering and Technology | en_US |
dc.publication | Peer Reviewed | en_US |
dc.identifier.doi | 10.1177/1077546313501536 | en_US |
dc.relation.issue | 15 | en_US |
dc.relation.volume | 19 | en_US |
cut.common.academicyear | 2012-2013 | en_US |
dc.identifier.spage | 2270 | en_US |
dc.identifier.epage | 2284 | en_US |
item.fulltext | With Fulltext | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | open | - |
item.openairecristype | http://purl.org/coar/resource_type/c_6501 | - |
item.openairetype | article | - |
item.languageiso639-1 | en | - |
crisitem.author.dept | Department of Civil Engineering and Geomatics | - |
crisitem.author.faculty | Faculty of Engineering and Technology | - |
crisitem.author.parentorg | Faculty of Engineering and Technology | - |
Appears in Collections: | Άρθρα/Articles |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Dertimanis.pdf | 304.42 kB | Adobe PDF | View/Open |
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