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

Cuadrado Sanguino, Manuel; Artero Guerrero, José Alfonso; Pernas Sánchez, Jesús; Varas Doval, David

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

dc.affiliation.dpto	UC3M. Departamento de Mecánica de Medios Continuos y Teoría de Estructuras	es
dc.affiliation.grupoinv	UC3M. Grupo de Investigación: Dinámica de Estructuras Ligeras	es
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.contributor.funder	Ministerio de Economía y Competitividad (España)	en
dc.contributor.funder	Universidad Carlos III de Madrid	es
dc.date.accessioned	2020-12-22T08:49:28Z
dc.date.available	2020-12-22T08:49:28Z
dc.date.issued	2019-09-01
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	en
dc.description.sponsorship	This research was done with the financial support of the Spanish Ministry of Economy and Competitiveness under Project reference DPI2013-41094-R, and the Vicerrectorado de Política Científica UC3M (Projects 2014/00006/002 and 2013/00413/003).	en
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.doi	10.1016/j.jsv.2019.05.007
dc.identifier.issn	0022-460X
dc.identifier.publicationfirstpage	380
dc.identifier.publicationlastpage	401
dc.identifier.publicationtitle	Journal of Sound and Vibration
dc.identifier.publicationvolume	455
dc.identifier.uri	https://hdl.handle.net/10016/31658
dc.identifier.uxxi	AR/0000023845
dc.language.iso	eng
dc.publisher	Elsevier
dc.relation.projectID	Gobierno de España. DPI2013-41094-R
dc.rights	© 2019 Elsevier
dc.rights	Atribución-NoComercial-SinDerivadas 3.0 España
dc.rights.accessRights	open access
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subject.eciencia	Ingeniería Mecánica	es
dc.subject.other	Model updating	en
dc.subject.other	Experimental modal data	en
dc.subject.other	Uncertain mechanical properties	en
dc.subject.other	Carbon epoxy composite	en
dc.subject.other	Level elastic parameters	en
dc.subject.other	Damage identification	en
dc.subject.other	Delamination	en
dc.title	Model updating of uncertain parameters of carbon/epoxy composite plates from experimental modal data	en
dc.type	research article	*
dc.type.hasVersion	AM	*
dspace.entity.type	Publication