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dc.contributor.authorPoblet-Puig, Jordi
dc.contributor.authorRodríguez Ferran, Antonio
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental
dc.date.accessioned2019-10-28T12:01:50Z
dc.date.available2019-10-28T12:01:50Z
dc.date.issued2019
dc.identifier.citationPoblet-Puig, J.; Rodriguez-Ferran, A. Application of inverse SEA models to obtain the Coupling LossFactor in structural junctions from numerical simulations. A: International Congress and Exposition on Noise Control Engineering. "48th International Congress and Exhibition on Noise Control Engineering (INTERNOISE 2019): Madrid, Spain: 16-19 june, 2019: proceedings". 2019, p. 1-12.
dc.identifier.isbn978-84-87985-31-7
dc.identifier.otherhttp://www.sea-acustica.es/fileadmin//INTERNOISE_2019/Fchrs/Proceedings/2030.pdf
dc.identifier.urihttp://hdl.handle.net/2117/170963
dc.description.abstractAn inverse SEA procedure that mimics the Experimental SEA (ESEA) is used in order to obtain the Coupling Loss Factor (CLF) of structural junctions. The main differences with respect to ESEA are that: 1) the subsystem energies and input powers are obtained by means of numerical simulations; and 2) the internal damping is imposed and must not be determined a posteriori (which allows reorganisation of the equations). The numerical model is based on the Spectral Finite Element Method (SFEM). This helps in order to cover a large frequency range without increasing the number of elements and to efficiently perform a large number of simulations with different load configurations (both aspects are required by the inverse SEA procedure). The contribution analyses several aspects such as: various options to obtain the input power from the numerical model; possible modifications in the background SEA model in order to avoid negative CLF values;assessment of the validity of the SEA hypotheses; possible shortcuts in order to avoid matrix singularities or to deal with abundant data. Finally, it is shown how the CLF values obtained for simple configurations can be used to model the response of more complex structures.
dc.format.extent12 p.
dc.language.isoeng
dc.subjectÀrees temàtiques de la UPC::Matemàtiques i estadística::Matemàtica aplicada a les ciències
dc.subject.lcshStrength of materials
dc.subject.otherSEA
dc.subject.othernon-negative
dc.subject.othervibration
dc.titleApplication of inverse SEA models to obtain the Coupling LossFactor in structural junctions from numerical simulations
dc.typeConference report
dc.subject.lemacResistència de materials
dc.contributor.groupUniversitat Politècnica de Catalunya. LACÀN - Mètodes Numèrics en Ciències Aplicades i Enginyeria
dc.subject.amsClassificació AMS::74 Mechanics of deformable solids::74H Dynamical problems
dc.rights.accessOpen Access
local.identifier.drac25328282
dc.description.versionPostprint (published version)
local.citation.authorPoblet-Puig, J.; Rodriguez-Ferran, A.
local.citation.contributorInternational Congress and Exposition on Noise Control Engineering
local.citation.publicationName48th International Congress and Exhibition on Noise Control Engineering (INTERNOISE 2019): Madrid, Spain: 16-19 june, 2019: proceedings
local.citation.startingPage1
local.citation.endingPage12


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