Simulation Analysis of Elasto-Plastic Deformation of TC16 Mechanical Locking Nuts During Installation

Simulation Analysis of Elasto-Plastic Deformation of TC16 Mechanical Locking Nuts During Installation | 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 Simulation Analysis of Elasto-Plastic Deformation of TC16 Mechanical Locking Nuts During Installation Zichen Peng, Liangliang Wei, Zhongliang Lin, Xiang Ji, Yajun Chen This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-8487408/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract The installation process of the mechanical locking nuts was simulated by using Abaqus. Supported by forming tests and metallographic analysis, this study investigated the elasto-plastic deformation of the nut during installation and determined the influence of the structural parameters of the nut lobe on the forming quality of the locking structure. The results reveal that during nut deformation, plastic deformation predominates near the head region, while localized structural displacement occurs toward the tail end. For MJ8×1 specification nuts, the axial displacement of the lobe material increases from 0.06 mm to 0.21 mm from the plastic deformation zone to the localized structural displacement zone. In contrast, the tangential displacement decreases from 0.35 mm to 0.07 mm. Within the range of 0.16 mm to 0.20 mm, the radial displacement initially decreases before increasing. The radial displacement at the thread flank exceeds that within the thread by 0.09 mm. Material in the indirect loaded zone of the nut primarily exhibits a radial displacement of 0.25 mm. A smaller lobe radius r and a longer chord length d correspond to a higher thread side elongation rate e , whereas the axial length l of the lobe shows no significant influence on e. When the parameters fall within the ranges of 1.20 mm < r < 1.35 mm, 2.30 mm < d < 2.40 mm, and 2.50 mm < l < 2.70 mm, e exceeds 3.0%, indicating favorable forming quality of the locking structure. TC16 Mechanical Locking Nuts Elasto-Plastic Deformation Finite Element Simulation Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Posted 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-8487408","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":571070073,"identity":"e14e89c9-f57a-452a-a015-9a4a416342b2","order_by":0,"name":"Zichen Peng","email":"","orcid":"","institution":"Sino-European Institute of Aviation Engineering, Civil Aviation University of China","correspondingAuthor":false,"prefix":"","firstName":"Zichen","middleName":"","lastName":"Peng","suffix":""},{"id":571070075,"identity":"94046565-d502-4383-bed0-e916bf5418a6","order_by":1,"name":"Liangliang Wei","email":"","orcid":"","institution":"Aerospace 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Installation","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":true,"highlight":"","institution":"","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":"TC16, Mechanical Locking Nuts, Elasto-Plastic Deformation, Finite Element Simulation","lastPublishedDoi":"10.21203/rs.3.rs-8487408/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-8487408/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eThe installation process of the mechanical locking nuts was simulated by using Abaqus. Supported by forming tests and metallographic analysis, this study investigated the elasto-plastic deformation of the nut during installation and determined the influence of the structural parameters of the nut lobe on the forming quality of the locking structure. The results reveal that during nut deformation, plastic deformation predominates near the head region, while localized structural displacement occurs toward the tail end. For MJ8\u0026times;1 specification nuts, the axial displacement of the lobe material increases from 0.06 mm to 0.21 mm from the plastic deformation zone to the localized structural displacement zone. In contrast, the tangential displacement decreases from 0.35 mm to 0.07 mm. Within the range of 0.16 mm to 0.20 mm, the radial displacement initially decreases before increasing. The radial displacement at the thread flank exceeds that within the thread by 0.09 mm. Material in the indirect loaded zone of the nut primarily exhibits a radial displacement of 0.25 mm. A smaller lobe radius \u003cem\u003er\u003c/em\u003e and a longer chord length \u003cem\u003ed\u003c/em\u003e correspond to a higher thread side elongation rate \u003cem\u003ee\u003c/em\u003e, whereas the axial length \u003cem\u003el\u003c/em\u003e of the lobe shows no significant influence on e. When the parameters fall within the ranges of 1.20 mm\u0026thinsp;\u0026lt;\u0026thinsp;\u003cem\u003er\u003c/em\u003e\u0026thinsp;\u0026lt;\u0026thinsp;1.35 mm, 2.30 mm\u0026thinsp;\u0026lt;\u0026thinsp;\u003cem\u003ed\u003c/em\u003e\u0026thinsp;\u0026lt;\u0026thinsp;2.40 mm, and 2.50 mm\u0026thinsp;\u0026lt;\u0026thinsp;\u003cem\u003el\u003c/em\u003e\u0026thinsp;\u0026lt;\u0026thinsp;2.70 mm, \u003cem\u003ee\u003c/em\u003e exceeds 3.0%, indicating favorable forming quality of the locking structure.\u003c/p\u003e","manuscriptTitle":"Simulation Analysis of Elasto-Plastic Deformation of TC16 Mechanical Locking Nuts During Installation","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2026-01-09 13:50:11","doi":"10.21203/rs.3.rs-8487408/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":"978ccded-db3a-4fb9-95a4-e9333347ebdd","owner":[],"postedDate":"January 9th, 2026","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"posted","subjectAreas":[],"tags":[],"updatedAt":"2026-03-09T06:11:21+00:00","versionOfRecord":[],"versionCreatedAt":"2026-01-09 13:50:11","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-8487408","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-8487408","identity":"rs-8487408","version":["v1"]},"buildId":"XKTyCvWXoU3ODBz1xrDgd","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}