Research on the Design and Performance of Drill Pipe Joints Based on Fracture Mechanics Methods

Research on the Design and Performance of Drill Pipe Joints Based on Fracture Mechanics Methods | 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 Research on the Design and Performance of Drill Pipe Joints Based on Fracture Mechanics Methods Jianguo Qin, Zhuoyi Feng, Miao Wang, Haixia Gong, Xiuzhuang Mei, and 1 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-6218107/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 02 Jul, 2025 Read the published version in Scientific Reports → Version 1 posted 10 You are reading this latest preprint version Abstract In the actual drilling process, fatigue failure of drill pipe joints predominantly occurs at the threaded connections, leading to a substantial increase in drilling costs. Considering the severe vibrations and abnormal wear experienced by drill pipes under complex working conditions, a three-dimensional finite element model of drill pipe joints was developed. This model is based on fracture mechanics theory, the principle of virtual work, the Von Mises yield criterion, and contact nonlinear theory, while also accounting for the influence of thread cone angles. By evaluating both straight and conical threads with varying tooth profile angles, optimal structural parameters were determined. The results indicate that a 45-degree tooth profile angle represents the optimal structural parameter, meeting the fundamental requirements for water exploration in coal mines. Physical sciences/Engineering/Mechanical engineering Physical sciences/Materials science/Theory and computation Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Published Journal Publication published 02 Jul, 2025 Read the published version in Scientific Reports → Version 1 posted Editorial decision: Revision requested 08 Apr, 2025 Reviews received at journal 06 Apr, 2025 Reviews received at journal 05 Apr, 2025 Reviewers agreed at journal 22 Mar, 2025 Reviewers agreed at journal 21 Mar, 2025 Reviewers invited by journal 21 Mar, 2025 Editor assigned by journal 21 Mar, 2025 Editor invited by journal 21 Mar, 2025 Submission checks completed at journal 20 Mar, 2025 First submitted to journal 13 Mar, 2025 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. 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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-6218107","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":433890338,"identity":"29b5f719-9e87-4540-bcc3-a137fd0fd9f3","order_by":0,"name":"Jianguo Qin","email":"","orcid":"","institution":"Inner Mongolia University of Technology","correspondingAuthor":false,"prefix":"","firstName":"Jianguo","middleName":"","lastName":"Qin","suffix":""},{"id":433890340,"identity":"a61178f0-1207-4d5f-a1b5-106a31563994","order_by":1,"name":"Zhuoyi 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