Publication:
Comparison of vibro-acoustic performance metrics in the design and optimization of stiffened composite fuselages

dc.contributor.departmentDepartment of Mechanical Engineering
dc.contributor.departmentGraduate School of Sciences and Engineering
dc.contributor.kuauthorBaşdoğan, İpek
dc.contributor.kuauthorSerhat, Gökhan
dc.contributor.schoolcollegeinstituteCollege of Engineering
dc.contributor.schoolcollegeinstituteGRADUATE SCHOOL OF SCIENCES AND ENGINEERING
dc.date.accessioned2024-11-09T23:54:15Z
dc.date.issued2016
dc.description.abstractIn this paper, a comparison of preliminary design methodologies for optimization of stiffened, fiber-reinforced composite fuselages for vibro-acoustic requirements is presented. Fuselage stiffness properties are modelled using lamination parameters and their effect on the vibro-acoustic performance is investigated using two different approaches. First method, only considers the structural model in order to explore the effect of design variables on fuselage vibrations. The simplified estimation of the acoustic behavior without considering fluid-structure interaction brings certain advantages such as reduced modelling effort and computational cost. In this case, the performance metric is chosen as equivalent radiated power (ERP) which is a well-known criterion in the prediction of structure-born noise. Second method, utilizes coupled vibroacoustic models to predict the sound pressure levels (SPL) inside the fuselage. ERP is calculated both for bay panels and fuselage section and then compared with the SPL results. The response surfaces of each metric are determined as a function of lamination parameters and their overall difference is quantified. ERP approach proves its merit provided that a sufficiently accurate model is used. The results demonstrate the importance of the simplifications made in the modelling and the selection of analysis approach in vibro-acoustic design of fuselages.
dc.description.indexedbyScopus
dc.description.openaccessYES
dc.description.publisherscopeInternational
dc.description.sponsoredbyTubitakEuN/A
dc.identifier.linkhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84994631273&partnerID=40&md5=b4c7856209c28f6921c1a454d33eddf6
dc.identifier.scopus2-s2.0-84994631273
dc.identifier.urihttps://hdl.handle.net/20.500.14288/15167
dc.keywordsAircraft interior noise
dc.language.isoeng
dc.publisherGerman Acoustical Society (DEGA)
dc.relation.ispartofProceedings of the INTER-NOISE 2016 - 45th International Congress and Exposition on Noise Control Engineering: Towards a Quieter Future
dc.subjectAcoustics
dc.subjectMechanical Engineering
dc.subjectMechanics
dc.titleComparison of vibro-acoustic performance metrics in the design and optimization of stiffened composite fuselages
dc.typeConference Proceeding
dspace.entity.typePublication
local.contributor.kuauthorSerhat, Gökhan
local.contributor.kuauthorBaşdoğan, İpek
local.publication.orgunit1GRADUATE SCHOOL OF SCIENCES AND ENGINEERING
local.publication.orgunit1College of Engineering
local.publication.orgunit2Department of Mechanical Engineering
local.publication.orgunit2Graduate School of Sciences and Engineering
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