Parametric approach to primary structure modelling of aircrafts for cabin noise analysis in FEM

Parametric approach to primary structure modelling of aircrafts for cabin noise analysis in FEM | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Parametric approach to primary structure modelling of aircrafts for cabin noise analysis in FEM Ray Donald Dewald, Thomas Klimmek, René Winter This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-6237808/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 22 Aug, 2025 Read the published version in CEAS Aeronautical Journal → Version 1 posted You are reading this latest preprint version Abstract The goals of the European Green Deal require the development of low-emission aircraft propulsion systems that take sustainable fuels into account. However, there is a conflict of objectives between effective fuel reduction and noise development of the propulsion system, as particularly efficient propulsion concepts are often based on open rotors which usually cause increased exterior and interior noise. In this context, the creation of precise vibroacoustic models is becoming increasingly important in order to ensure a valid evaluation and optimization of aircraft interior acoustics in the early phases of the design process. The primary structure of the entire aircraft is an important component of the transfer path between external excitation and the resulting cabin noise, because it is decisive for the spatial propagation of structure-borne noise. This publication therefore focuses on the parametric creation of complete primary structure models for aircrafts based on preliminary design data with a level of detail that is relevant for the vibroacoustic frequency range. Generally valid modeling approaches for finite element models, e.g. the correct choice of mesh resolution, that were derived from experiments are also shown in detail. In combination with the external excitation, qualitative statements on the vibroacoustic properties of the aircraft can already be made at primary structure level, by calculating spatially and spectrally integrated energy distributions. This is demonstrated for two different aircraft configurations using validated operating excitations of V2500 engines in cruise flight. Aircraft interior noise Sound transmission Automated modeling FEM Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Published Journal Publication published 22 Aug, 2025 Read the published version in CEAS Aeronautical Journal → Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-6237808","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":442760286,"identity":"5f735626-bd00-447f-960a-61739d1b97a5","order_by":0,"name":"Ray Donald Dewald","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAz0lEQVRIiWNgGAWjYLACHiDmY0g+IPGAgYGxgWgtbAxpCRIJJGrJMSBOi3n7GQOGNxWH5dnYcz7eSNzDINtPSIvMmRwDxjlnDhu28bzdbJHwjMF4JiFrJIDuYeZtu83YJpG7TSLhAEPihgOEtPC/AWr5d9u+TSLnGVjLfoJaJEC2NNxOBGphg9hCyC8SEs8KDs459j+5jeeZsUXCAQnjGYQdlrzxwZuaNNt+9uSHNz4csJHtbyBkDQOHAbKxEgTVAwH7A2JUjYJRMApGwUgGAACwQgOEkI9/AAAAAElFTkSuQmCC","orcid":"","institution":"German Aerospace Center (DLR), Institute of Aeroelasticity","correspondingAuthor":true,"prefix":"","firstName":"Ray","middleName":"Donald","lastName":"Dewald","suffix":""},{"id":442760287,"identity":"8265aa76-d47a-4228-86e2-d2ff74a950c7","order_by":1,"name":"Thomas Klimmek","email":"","orcid":"","institution":"German Aerospace Center (DLR), Institute of Aeroelasticity","correspondingAuthor":false,"prefix":"","firstName":"Thomas","middleName":"","lastName":"Klimmek","suffix":""},{"id":442760288,"identity":"c53cd539-0114-4c89-b30f-13ca94fde256","order_by":2,"name":"René Winter","email":"","orcid":"","institution":"German Aerospace Center (DLR), Institute of Aeroelasticity","correspondingAuthor":false,"prefix":"","firstName":"René","middleName":"","lastName":"Winter","suffix":""}],"badges":[],"createdAt":"2025-03-16 13:23:11","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-6237808/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-6237808/v1","draftVersion":[],"editorialEvents":[{"content":"https://doi.org/10.1007/s13272-025-00888-1","type":"published","date":"2025-08-22T16:29:37+00:00"}],"editorialNote":"","failedWorkflow":false,"files":[{"id":89847358,"identity":"f9b6deb9-2ea4-471c-bb51-5d452394e503","added_by":"auto","created_at":"2025-08-25 16:43:19","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":1120436,"visible":true,"origin":"","legend":"","description":"","filename":"DewaldParametricapproachtoprimarystructuremodellingofaircraftsforcabinnoiseanalysisinFEM.pdf","url":"https://assets-eu.researchsquare.com/files/rs-6237808/v1_covered_67803e24-7d3c-4cab-a98e-561b8a71129e.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Parametric approach to primary structure modelling of aircrafts for cabin noise analysis in FEM","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":true,"highlight":"","institution":"","isAcceptedByJournal":true,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true},"keywords":"Aircraft interior noise, Sound transmission, Automated modeling, FEM ","lastPublishedDoi":"10.21203/rs.3.rs-6237808/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-6237808/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eThe goals of the European Green Deal require the development of low-emission aircraft propulsion systems that take sustainable fuels into account. However, there is a conflict of objectives between effective fuel reduction and noise development of the propulsion system, as particularly efficient propulsion concepts are often based on open rotors which usually cause increased exterior and interior noise. In this context, the creation of precise vibroacoustic models is becoming increasingly important in order to ensure a valid evaluation and optimization of aircraft interior acoustics in the early phases of the design process. The primary structure of the entire aircraft is an important component of the transfer path between external excitation and the resulting cabin noise, because it is decisive for the spatial propagation of structure-borne noise. This publication therefore focuses on the parametric creation of complete primary structure models for aircrafts based on preliminary design data with a level of detail that is relevant for the vibroacoustic frequency range. Generally valid modeling approaches for finite element models, e.g. the correct choice of mesh resolution, that were derived from experiments are also shown in detail. In combination with the external excitation, qualitative statements on the vibroacoustic properties of the aircraft can already be made at primary structure level, by calculating spatially and spectrally integrated energy distributions. This is demonstrated for two different aircraft configurations using validated operating excitations of V2500 engines in cruise flight.\u003c/p\u003e","manuscriptTitle":"Parametric approach to primary structure modelling of aircrafts for cabin noise analysis in FEM","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2025-04-25 17:09:38","doi":"10.21203/rs.3.rs-6237808/v1","editorialEvents":[{"type":"communityComments","content":0}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true}}],"origin":"","ownerIdentity":"d44db469-6b9e-4cdb-88d3-2a2a5d9e58a5","owner":[],"postedDate":"April 25th, 2025","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"posted","subjectAreas":[],"tags":[],"updatedAt":"2025-08-25T16:36:51+00:00","versionOfRecord":{"articleIdentity":"rs-6237808","link":"https://doi.org/10.1007/s13272-025-00888-1","journal":{"identity":"ceas-aeronautical-journal","isVorOnly":false,"title":"CEAS Aeronautical Journal"},"publishedOn":"2025-08-22 16:29:37","publishedOnDateReadable":"August 22nd, 2025"},"versionCreatedAt":"2025-04-25 17:09:38","video":"","vorDoi":"10.1007/s13272-025-00888-1","vorDoiUrl":"https://doi.org/10.1007/s13272-025-00888-1","workflowStages":[]},"version":"v1","identity":"rs-6237808","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-6237808","identity":"rs-6237808","version":["v1"]},"buildId":"8U1c8b4HqxoKbykW_rLl7","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}