title: Application of an instrumental and computational approach for improving the vibration behavior of structural panels using a lightweight multilayer composite.
abstract: This work presents a hybrid (experimental-computational) application for improving the vibration behavior of structural components using a lightweight multilayer composite. The vibration behavior of a flat steel plate has been improved by the gluing of a lightweight composite formed by a core of polyurethane foam and two paper mats placed on its faces. This composite enables the natural frequencies to be increased and the modal density of the plate to be reduced, moving about the natural frequencies of the plate out of excitation range, thereby improving the vibration behavior of the plate. A specific experimental model for measuring the Operating Deflection Shape (ODS) has been developed, which enables an evaluation of the goodness of the natural frequencies obtained with the computational model simulated by the finite element method (FEM). The model of composite + flat steel plate determined by FEM was used to conduct parametric study, and the most influential factors for 1st, 2nd and 3rd mode were identified using a multifactor analysis of variance (Multifactor-ANOVA). The presented results can be easily particularized for other cases, as it may be used in cycles of continuous improvement as well as in the product development at the material, piece, and complete-system levels.
authors.affiliation: Department of Materials Science and Metallurgical Engineering, Graphic Expression in Engineering, Cartographic Engineering, Geodesy and Photogrammetry, Mechanical Engineering and Manufacturing Engineering, Universidad de Valladolid, Pº del Cauce 59, Valladolid 47011, Spain. asanchez@eii.uva.es.
authors.forename: Alberto
authors.initials: A
authors.lastname: Sánchez
authors.affiliation: Department of Construction and Manufacturing Engineering, Universidad Nacional de Educación a Distancia (UNED), C/Juan del Rosal 12, Madrid 28040, Spain. mggarcia@ind.uned.es.
authors.forename: Manuel
authors.initials: M
authors.lastname: García
authors.affiliation: Department of Construction and Manufacturing Engineering, Universidad Nacional de Educación a Distancia (UNED), C/Juan del Rosal 12, Madrid 28040, Spain. msebastian@ind.uned.es.
authors.forename: Miguel Angel
authors.initials: MA
authors.lastname: Sebastián
authors.affiliation: Department of Construction and Manufacturing Engineering, Universidad Nacional de Educación a Distancia (UNED), C/Juan del Rosal 12, Madrid 28040, Spain. amcamacho@ind.uned.es.
authors.forename: Ana María
authors.initials: AM
authors.lastname: Camacho