Efficient Unbalance Variation in Condensed FE Bodies

Efficient Unbalance Variation in Condensed FE Bodies | 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 Efficient Unbalance Variation in Condensed FE Bodies Klaus-Dieter Bauer, Günter Offner This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-6834893/v2 This work is licensed under a CC BY 4.0 License Status: Posted Version 2 posted You are reading this latest preprint version Show more versions Abstract Abstract For multi-body simulations involving high-speed rotating components common in electric motors and turbochargers studying unbalance effects is of particular importance, in particular for the assessment of their NVH (noise vibration, harshness) characteristics. Detailed finite element (FE) models of components are condensed to representations with less degrees of freedom to allow viable simulation times for realistic assemblies. Performing parameter studies over variations in the unbalance properties of a body would therefore require the creation of variations of the finite element model and subsequent reduction for each component with variable unbalance properties. Such a procedure is computationally expensive, with the condensation of each component variant potentially taking multiple hours on modern desktop hardware. Additionally it typically requires manually performing steps across multiple software packages. The resulting workflows are too unattractive for routine usage. In this study we discuss an alternative approach, where small unbalance variations can be added directly to condensed FE models without needing access to the full FE model. This newly derived formalism hence allows efficient execution of unbalance parameter studies. Full Text Additional Declarations Competing interest reported. As defined at https://www.springer.com/gp/editorial-policies/competing-interests FUNDING Part of this work has been supported by FFG within the project “FFG DigiLab”. FINANCIAL INTERESTS The corresponding author KD Bauer has implemented the work presented in this work in AVL EXCITE, a commercial product of AVL List GmbH. G Offner is working directly at AVL List GmbH. KD Bauer is partly working at MathConsult GmbH, his position partly funded by AVL List GmbH. Cite Share Download PDF Status: Posted Version 2 posted You are reading this latest preprint version Show more versions 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. 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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-6834893","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":476329746,"identity":"5fc8084c-0279-4504-8a5f-7bb27d99df72","order_by":0,"name":"Klaus-Dieter Bauer","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA/klEQVRIiWNgGAWjYBACCYYcMC3HwEyqFmMMLRKEtCQ2YMrgAJLtuQc/81TcS9/ezvzw0w0GGzn+GQmMH34w2NXh0iLN8y5ZmudMce6cw2zG0jkMacYSNxKYJXsYknHaIieRYyDN25aQO4OZhwGo5XBiw+0EBmkGBmZ8Wox/8/5LSJdg5mH+DdRSP/92AvNvBoZ6nFqkJXLMpHkbEhKAWthAtiQY3E5gA9pyGLf3e96lWc45lmA4g5nNzDrHIM1w4/2HbZY9BsclG3BokTiee/jGm5oEeQn+w49v51TYyMudOXz4xo+Kan5ctqABAxDB2ABljIJRMApGwSggFwAADLJJZCrglrMAAAAASUVORK5CYII=","orcid":"","institution":"Johann Radon Institute for Computational and Applied Mathematics","correspondingAuthor":true,"prefix":"","firstName":"Klaus-Dieter","middleName":"","lastName":"Bauer","suffix":""},{"id":476329747,"identity":"530889cf-8820-488a-9fbf-b82f62530f3b","order_by":1,"name":"Günter Offner","email":"","orcid":"","institution":"AVL List GmbH","correspondingAuthor":false,"prefix":"","firstName":"Günter","middleName":"","lastName":"Offner","suffix":""}],"badges":[],"createdAt":"2025-06-06 07:55:54","currentVersionCode":2,"declarations":{"humanSubjects":false,"vertebrateSubjects":false,"conflictsOfInterestStatement":true,"humanSubjectEthicalGuidelines":false,"humanSubjectConsent":false,"humanSubjectClinicalTrial":false,"humanSubjectCaseReport":false,"vertebrateSubjectEthicalGuidelines":false},"doi":"10.21203/rs.3.rs-6834893/v2","doiUrl":"https://doi.org/10.21203/rs.3.rs-6834893/v2","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":108497933,"identity":"a56f4b0e-b1d0-4c72-b8a1-6715f7a4b4fb","added_by":"auto","created_at":"2026-05-05 10:14:01","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":365023,"visible":true,"origin":"","legend":"","description":"","filename":"6394UBPublicationsubmission.pdf","url":"https://assets-eu.researchsquare.com/files/rs-6834893/v2_covered_389cf915-316e-40b2-b0b2-acb1f27ccb46.pdf"}],"financialInterests":"Competing interest reported. As defined at https://www.springer.com/gp/editorial-policies/competing-interests\n__________________________________________________\nFUNDING\nPart of this work has been supported by FFG within the project “FFG DigiLab”.\n__________________________________________________\nFINANCIAL INTERESTS\nThe corresponding author KD Bauer has implemented the work presented in this work in AVL EXCITE, a commercial product of AVL List GmbH.\nG Offner is working directly at AVL List GmbH.\nKD Bauer is partly working at MathConsult GmbH, his position partly funded by AVL List GmbH.","formattedTitle":"Efficient Unbalance Variation in Condensed FE Bodies","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":true,"hideJournal":true,"highlight":"","institution":"Austrian Academy of Sciences","isAcceptedByJournal":false,"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":"","lastPublishedDoi":"10.21203/rs.3.rs-6834893/v2","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-6834893/v2","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"Abstract For multi-body simulations involving high-speed rotating components common in electric motors and turbochargers studying unbalance effects is of particular importance, in particular for the assessment of their NVH (noise vibration, harshness) characteristics. Detailed finite element (FE) models of components are condensed to representations with less degrees of freedom to allow viable simulation times for realistic assemblies. Performing parameter studies over variations in the unbalance properties of a body would therefore require the creation of variations of the finite element model and subsequent reduction for each component with variable unbalance properties. Such a procedure is computationally expensive, with the condensation of each component variant potentially taking multiple hours on modern desktop hardware. Additionally it typically requires manually performing steps across multiple software packages. The resulting workflows are too unattractive for routine usage. In this study we discuss an alternative approach, where small unbalance variations can be added directly to condensed FE models without needing access to the full FE model. 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