Numerical analysis of welding residual stress for corrosion-pitted plates in marine environment‌

Numerical analysis of welding residual stress for corrosion-pitted plates in marine environment‌ | 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 Numerical analysis of welding residual stress for corrosion-pitted plates in marine environment‌ jian xiang, Jiangfeng Tan, Hui Li, Jianbao Yuan, Song Liang, Yuan Lei This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-9036727/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 5 You are reading this latest preprint version Abstract Aiming at the welding repair of corroded and aged plate structures in marine environments, specimens containing corrosion pits are adopted as the research object. A finite element model for the butt welding of flat plates with corrosion pits is established by means of ANSYS APDL, and the model is solved using thermo-mechanical coupling analysis. The accuracy and reliability of the proposed model are further verified through comparison with corresponding experimental results. Results show that corrosion pits change the heat transfer path in welded structures, leading to heat accumulation on one side of the weld zone. This effect is enhanced as the aspect ratio η of the corrosion pits increases. Corrosion pits raise the transverse and longitudinal residual tensile stresses by 30.60% and 24.24%, respectively, and increase the gradient between tensile and compressive stresses. With increasing aspect ratio η , the transverse residual stress increases with depth when η 1, and reaches a maximum at η = 1. The longitudinal residual stress increases continuously in the range η = 0.25–0.75, with the high-stress zone expanding radially around the pit. As η rises to 1-1.5, the stress peak increases, the high-stress region extends into the pit interior and wall, and the stress gradient becomes steeper. In the welding repair of corroded pit components, particular attention should be paid to deep and narrow pits with η ≥ 1 to prevent crack propagation induced by the coupling of welding residual stress and stress concentration, thereby guaranteeing structural integrity. Marine environment Corrosion pit Welding repair Temperature field Residual stress Full Text Cite Share Download PDF Status: Under Review Version 1 posted Reviewers agreed at journal 08 Apr, 2026 Reviewers invited by journal 02 Apr, 2026 Editor invited by journal 09 Mar, 2026 Editor assigned by journal 06 Mar, 2026 First submitted to journal 05 Mar, 2026 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. 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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-9036727","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":616737745,"identity":"c223f9b1-8835-49f1-a72d-1398be481440","order_by":0,"name":"jian 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Hybrid","inReviewEnabled":true,"inReviewRevisionsEnabled":false},"keywords":"Marine environment, Corrosion pit, Welding repair, Temperature field, Residual stress","lastPublishedDoi":"10.21203/rs.3.rs-9036727/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-9036727/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eAiming at the welding repair of corroded and aged plate structures in marine environments, specimens containing corrosion pits are adopted as the research object. A finite element model for the butt welding of flat plates with corrosion pits is established by means of ANSYS APDL, and the model is solved using thermo-mechanical coupling analysis. The accuracy and reliability of the proposed model are further verified through comparison with corresponding experimental results. Results show that corrosion pits change the heat transfer path in welded structures, leading to heat accumulation on one side of the weld zone. This effect is enhanced as the aspect ratio \u003cem\u003eη\u003c/em\u003e of the corrosion pits increases. Corrosion pits raise the transverse and longitudinal residual tensile stresses by 30.60% and 24.24%, respectively, and increase the gradient between tensile and compressive stresses. With increasing aspect ratio \u003cem\u003eη\u003c/em\u003e, the transverse residual stress increases with depth when \u003cem\u003eη\u003c/em\u003e\u0026thinsp;\u0026lt;\u0026thinsp;1, decreases when \u003cem\u003eη\u003c/em\u003e\u0026thinsp;\u0026gt;\u0026thinsp;1, and reaches a maximum at \u003cem\u003eη\u003c/em\u003e\u0026thinsp;=\u0026thinsp;1. The longitudinal residual stress increases continuously in the range \u003cem\u003eη\u003c/em\u003e\u0026thinsp;=\u0026thinsp;0.25\u0026ndash;0.75, with the high-stress zone expanding radially around the pit. As \u003cem\u003eη\u003c/em\u003e rises to 1-1.5, the stress peak increases, the high-stress region extends into the pit interior and wall, and the stress gradient becomes steeper. In the welding repair of corroded pit components, particular attention should be paid to deep and narrow pits with \u003cem\u003eη\u003c/em\u003e\u0026thinsp;\u0026ge;\u0026thinsp;1 to prevent crack propagation induced by the coupling of welding residual stress and stress concentration, thereby guaranteeing structural integrity.\u003c/p\u003e","manuscriptTitle":"Numerical analysis of welding residual stress for corrosion-pitted plates in marine environment‌","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2026-04-08 09:38:33","doi":"10.21203/rs.3.rs-9036727/v1","editorialEvents":[{"type":"communityComments","content":0},{"type":"reviewerAgreed","content":"","date":"2026-04-08T11:38:23+00:00","index":0,"fulltext":""},{"type":"reviewersInvited","content":"","date":"2026-04-02T16:08:55+00:00","index":"","fulltext":""},{"type":"editorInvited","content":"Welding in the World","date":"2026-03-09T15:08:22+00:00","index":"","fulltext":""},{"type":"editorAssigned","content":"","date":"2026-03-06T14:13:58+00:00","index":"","fulltext":""},{"type":"submitted","content":"Welding in the World","date":"2026-03-05T21:03:55+00:00","index":"","fulltext":""}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"welding-in-the-world","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"witw","sideBox":"Learn more about [Welding in the World](https://www.springer.com/journal/40194)","snPcode":"40194","submissionUrl":"https://www.editorialmanager.com/witw/","title":"Welding in the World","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"em","reportingPortfolio":"Springer Hybrid","inReviewEnabled":true,"inReviewRevisionsEnabled":false}}],"origin":"","ownerIdentity":"4f7b468e-2f99-4d3e-a91b-b655b5df9b92","owner":[],"postedDate":"April 8th, 2026","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"under-review","subjectAreas":[],"tags":[],"updatedAt":"2026-04-08T09:38:33+00:00","versionOfRecord":[],"versionCreatedAt":"2026-04-08 09:38:33","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-9036727","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-9036727","identity":"rs-9036727","version":["v1"]},"buildId":"XKTyCvWXoU3ODBz1xrDgd","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}