Thermomechanical Modeling and Shape Control of Laser Additive Manufacturing on Curved Substrates

Thermomechanical Modeling and Shape Control of Laser Additive Manufacturing on Curved Substrates | 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 Thermomechanical Modeling and Shape Control of Laser Additive Manufacturing on Curved Substrates Qingchun Tang, Hangyu Zu, Wanshun Zhang, Yukun Huang, Fengjun Chen, and 1 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-9222517/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 To address the significant distortion of clad curved surfaces caused by improper process-parameter settings in laser additive manufacturing, this study proposes a shape-control method for laser additive manufacturing on curved substrates. First, 316L stainless steel was selected as the specimen material, and an additively manufactured component deposited along a spatial spiral laser-cladding trajectory on an annular curved substrate was taken as the research object. A multiphysics coupled analysis model was established by combining the element birth-and-death technique with a moving Gaussian heat source. Subsequently, the temperature field, thermal stress, and deformation under different combinations of laser process parameters were numerically analyzed, and the optimal parameter combination was determined using minimum deformation as the evaluation criterion. Finally, experiments were conducted on a four-axis laser cladding system to evaluate the surface roughness and deformation of clad parts under different parameter combinations. The results show that, compared with the other parameter combinations, the optimal process parameters reduced the deformation of the curved clad substrate by up to 1.95% and the surface roughness by up to approximately 22.4%. In addition, the study indicates that optimizing laser process parameters to achieve a proper match of heat input can effectively improve the surface morphology of the clad layer and suppress deformation of the curved substrate, thereby providing a new perspective for shape control in laser additive manufacturing on curved substrates. Laser additive manufacturing 316L stainless steel Temperature distribution and deformation Numerical simulation study 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-9222517","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":614772829,"identity":"20ca6567-8030-4507-8da9-613bec01ea84","order_by":0,"name":"Qingchun Tang","email":"","orcid":"","institution":"Guangxi University of Science and Technology","correspondingAuthor":false,"prefix":"","firstName":"Qingchun","middleName":"","lastName":"Tang","suffix":""},{"id":614772830,"identity":"4cc16f25-691e-4d4c-9745-b3bf4b8203a0","order_by":1,"name":"Hangyu Zu","email":"","orcid":"","institution":"Guangxi University of Science and 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First, 316L stainless steel was selected as the specimen material, and an additively manufactured component deposited along a spatial spiral laser-cladding trajectory on an annular curved substrate was taken as the research object. A multiphysics coupled analysis model was established by combining the element birth-and-death technique with a moving Gaussian heat source. Subsequently, the temperature field, thermal stress, and deformation under different combinations of laser process parameters were numerically analyzed, and the optimal parameter combination was determined using minimum deformation as the evaluation criterion. Finally, experiments were conducted on a four-axis laser cladding system to evaluate the surface roughness and deformation of clad parts under different parameter combinations. 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