Analysis of Stress Concentration in Aerospace Aluminum Alloy Plate Welded Structure

Analysis of Stress Concentration in Aerospace Aluminum Alloy Plate Welded Structure | 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 Article Analysis of Stress Concentration in Aerospace Aluminum Alloy Plate Welded Structure Guangze Li, Yuxin Shen, Caijun Xue This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-6174481/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 Stress concentration of welded joint causes the partial material of welded structure to reach the strength limit prematurely under the load, resulting in failure. The influences of plate welded joint geometric parameters on toe stress concentration were studied. Through the finite element software ANSYS 2020, the first principal stress values of welded joint toe under uniform drawing load and pure bending load were calculated. The ratio of the maximum value of first principal stress to the average value of first principal stress is defined as stress concentration coefficient. The coefficient is mainly affected by the radius of the considered toe, the angle of the considered toe, the plate thickness, the widths of the upside and downside welds and the heights of the upside and downside reinforcements. For uniform drawing load, the coefficient decreases with the increase of toe radius, but increases with the increase of the other parameters. The variation range is between 0 and 98.5%. For pure bending load, the coefficient increases with the increase of toe angle, plate thickness, upside weld width and upside reinforcement height, but decreases with the increase of the other parameters. The variation range is between 0 and 105.1%. The expressions of stress concentration coefficient of welded joint under uniform drawing and pure bending external loads were obtained by regression analyses of the numerical results. The errors of the two expressions are both less than 10% within the selected value ranges that cover the geometric sizes of most plate butt joints in practical engineering. Physical sciences/Engineering Physical sciences/Physics Aluminum alloy Welding Stress concentration Finite element method Regression analysis 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-6174481","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":428285388,"identity":"a1bf7b0e-551c-402f-bac4-a037c3db9237","order_by":0,"name":"Guangze Li","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA3UlEQVRIiWNgGAWjYBACPmYYi7/94IOEihrCWtjgWiTOJBs8OHOMCC0IZoKZ5MMWZtxK4VrY2a9J/NxRa8/PcCCtIrGBDejA7gQCDuMpk+w9c5xZsrnx2I3EHTJAB57dQEhLmgRv2zE2gwMH0m4knmFjMJDIJaxF8m/bMR77AwlmBYltzMRoYT8mzdtWI2EA9D4DkVp4mK1l2w4YSNw4kyyRcOYYD0G/8PMff3jzbVudPX9/+8GPPypq5Pjbe/FrYWDgMQAShxFcAspBgP0BkKgjQuEoGAWjYBSMWAAAIVFEmX8BKfcAAAAASUVORK5CYII=","orcid":"","institution":"Nanjing University of Aeronautics and Astronautics","correspondingAuthor":true,"prefix":"","firstName":"Guangze","middleName":"","lastName":"Li","suffix":""},{"id":428285389,"identity":"9cee0766-2385-4de3-a90f-b4483689d3ae","order_by":1,"name":"Yuxin Shen","email":"","orcid":"","institution":"Nanjing University of Aeronautics and Astronautics","correspondingAuthor":false,"prefix":"","firstName":"Yuxin","middleName":"","lastName":"Shen","suffix":""},{"id":428285390,"identity":"3731ccaf-1192-4080-9665-06119c920347","order_by":2,"name":"Caijun Xue","email":"","orcid":"","institution":"Nanjing University of Aeronautics and Astronautics","correspondingAuthor":false,"prefix":"","firstName":"Caijun","middleName":"","lastName":"Xue","suffix":""}],"badges":[],"createdAt":"2025-03-07 03:08:20","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-6174481/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-6174481/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":90861596,"identity":"dc988a02-2432-44dd-be25-de25495034bb","added_by":"auto","created_at":"2025-09-09 06:17:06","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":775584,"visible":true,"origin":"","legend":"","description":"","filename":"AnalysisofStressConcentrationinAerospaceAluminumAlloyPlateWeldedStructure.pdf","url":"https://assets-eu.researchsquare.com/files/rs-6174481/v1_covered_6f8651c3-376a-422b-809b-f5ebe2a86366.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Analysis of Stress Concentration in Aerospace Aluminum Alloy Plate Welded Structure","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":true,"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":"Aluminum alloy, Welding, Stress concentration, Finite element method, Regression analysis","lastPublishedDoi":"10.21203/rs.3.rs-6174481/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-6174481/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eStress concentration of welded joint causes the partial material of welded structure to reach the strength limit prematurely under the load, resulting in failure. The influences of plate welded joint geometric parameters on toe stress concentration were studied. Through the finite element software ANSYS 2020, the first principal stress values of welded joint toe under uniform drawing load and pure bending load were calculated. The ratio of the maximum value of first principal stress to the average value of first principal stress is defined as stress concentration coefficient. The coefficient is mainly affected by the radius of the considered toe, the angle of the considered toe, the plate thickness, the widths of the upside and downside welds and the heights of the upside and downside reinforcements. For uniform drawing load, the coefficient decreases with the increase of toe radius, but increases with the increase of the other parameters. The variation range is between 0 and 98.5%. For pure bending load, the coefficient increases with the increase of toe angle, plate thickness, upside weld width and upside reinforcement height, but decreases with the increase of the other parameters. The variation range is between 0 and 105.1%. The expressions of stress concentration coefficient of welded joint under uniform drawing and pure bending external loads were obtained by regression analyses of the numerical results. The errors of the two expressions are both less than 10% within the selected value ranges that cover the geometric sizes of most plate butt joints in practical engineering.\u003c/p\u003e","manuscriptTitle":"Analysis of Stress Concentration in Aerospace Aluminum Alloy Plate Welded Structure","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2025-03-14 03:04:05","doi":"10.21203/rs.3.rs-6174481/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":"c9172f63-1569-4122-9c6f-871fe099768a","owner":[],"postedDate":"March 14th, 2025","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"posted","subjectAreas":[{"id":45629292,"name":"Physical sciences/Engineering"},{"id":45629293,"name":"Physical sciences/Physics"}],"tags":[],"updatedAt":"2025-09-09T06:08:52+00:00","versionOfRecord":[],"versionCreatedAt":"2025-03-14 03:04:05","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-6174481","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-6174481","identity":"rs-6174481","version":["v1"]},"buildId":"8U1c8b4HqxoKbykW_rLl7","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}