Model updating of uncertain parameters of carbon/epoxy composite plates from experimental modal data

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dc.contributor.author Cuadrado Sanguino, Manuel
dc.contributor.author Artero Guerrero, José Alfonso
dc.contributor.author Pernas Sánchez, Jesús
dc.contributor.author Varas Doval, David
dc.date.accessioned 2020-12-04T09:44:07Z
dc.date.available 2021-09-01T23:00:04Z
dc.date.issued 2019-09-01
dc.identifier.bibliographicCitation Cuadrado, M., Artero-Guerrero, J. A., Pernas-Sánchez, J., & Varas, D. (2019). Model updating of uncertain parameters of carbon/epoxy composite plates from experimental modal data. Journal of Sound and Vibration, 455, 380-401.
dc.identifier.issn 0022-460X
dc.identifier.uri http://hdl.handle.net/10016/31536
dc.description.abstract This work presents a methodology to obtain physically-sound models of composite structure laminates using a combination of modal analysis, numerical modelling and parameter updating, avoiding the common uncertainties on the constructions of similar numerical models. Moreover this model establishes the baseline (pristine situation) of the dynamic behaviour of the set of composite plates. Therefore it could be applied for condition assessment or quality manufacturing control of existing structures through a non-destructive Structural Health Monitoring (SHM), and hence it could help to detect degradation or defects of the composite components. The driven data of the methodology were the modal frequencies and shapes of composite plates. To obtain these values an extensive experimental campaign of modal analysis has been performed on a set of carbon/epoxy laminates. A multiple input single output technique has been applied, using a roving hammer exciting the plates at evenly distributed Degrees of Freedom (DoF), and a mono-axial accelerometer attached to a single DoF reference point. The use of a high dense grid of points has allowed to identify a number of natural frequencies greater than usual in similar works, as well as improving the smoothness of the mode shape. Modal characteristics numerically obtained from a Finite Element Method (FEM) model based on manufacturer reference data were compared with experimental results. This baseline model was updated through a gradient based optimization algorithm. Before the process of model updating, a sensitivity analysis has been performed to identify the driven uncertain parameters using a Montecarlo approach. This technique reduces the number of parameters to be optimized to a small set increasing the efficiency of the methodology. As a result of the whole process, a physically more accurate model is obtained on which discrepancies with the corresponding experimentally measured modal parameters are drastically reduced. Analy
dc.language.iso eng
dc.publisher Elsevier
dc.rights © 2019 Elsevier
dc.rights Atribución-NoComercial-SinDerivadas 3.0 España
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subject.other Model updating
dc.subject.other Experimental modal data
dc.subject.other Uncertain mechanical properties
dc.subject.other Carbon epoxy composite
dc.subject.other Level elastic parameters
dc.subject.other Damage identification
dc.subject.other Delamination
dc.title Model updating of uncertain parameters of carbon/epoxy composite plates from experimental modal data
dc.type article
dc.subject.eciencia Ingeniería Mecánica
dc.identifier.doi 10.1016/j.jsv.2019.05.007
dc.rights.accessRights embargoedAccess
dc.relation.projectID Gobierno de España. DPI2013-41094-R
dc.type.version acceptedVersion
dc.identifier.publicationfirstpage 380
dc.identifier.publicationlastpage 401
dc.identifier.publicationtitle Journal of Sound and Vibration
dc.identifier.publicationvolume 455
dc.identifier.uxxi AR/0000023845
carlosiii.embargo.terms 2021-09-01
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