Dynamic Influence of Hole Geometry on Hybrid GFRP/Al Joint Performance

Dynamic Influence of Hole Geometry on Hybrid GFRP/Al Joint Performance | 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 Dynamic Influence of Hole Geometry on Hybrid GFRP/Al Joint Performance Hao Li, Hongbin Xie, Xianming Meng, Xingfeng Cao, Zhitong Zhou, and 2 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-6664147/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 19 Sep, 2025 Read the published version in Applied Composite Materials → Version 1 posted 14 You are reading this latest preprint version Abstract This study investigates the influence of joining parameters on the dynamic tensile performance of hybrid bonded-bolted GFRP/Al joints, which are crucial in aerospace and automotive applications due to their high strength and lightweight properties. The motivation lies in addressing challenges related to geometric imperfections and varying assembly conditions that significantly impact joint reliability under dynamic loads. Experiments and numerical simulations were conducted to evaluate the effects of perpendicularity errors, fit clearance, and preload on the mechanical performance and failure modes of these joints. Dynamic tensile tests were performed using controlled loading conditions, and finite element modeling was employed to validate experimental findings and provide additional insights into stress distributions and failure mechanisms. The results demonstrated that perpendicularity errors significantly degrade joint performance. Specifically, joints with a 3° perpendicularity error parallel to the load direction exhibited a 64.40% reduction in energy absorption, whereas errors perpendicular to the load direction resulted in a 31.09% reduction. Excessive fit clearance changed the failure mode from tensile to shear, particularly at lower loading speeds. Increasing the preload effectively delayed adhesive layer delamination, reduced deformation, and enhanced overall joint strength. This research provides novel insights into the effects of geometric errors and assembly conditions on hybrid joint performance. Hole geometry errors Hybrid bonded-bolted joints Dynamic tensile GFRP/Al joints Mechanical behavior Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Published Journal Publication published 19 Sep, 2025 Read the published version in Applied Composite Materials → Version 1 posted Editorial decision: Revision requested 23 Jun, 2025 Reviews received at journal 11 Jun, 2025 Reviews received at journal 07 Jun, 2025 Reviews received at journal 03 Jun, 2025 Reviewers agreed at journal 02 Jun, 2025 Reviewers agreed at journal 02 Jun, 2025 Reviews received at journal 02 Jun, 2025 Reviewers agreed at journal 28 May, 2025 Reviewers agreed at journal 28 May, 2025 Reviewers agreed at journal 28 May, 2025 Reviewers invited by journal 28 May, 2025 Editor assigned by journal 15 May, 2025 Submission checks completed at journal 15 May, 2025 First submitted to journal 14 May, 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. 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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-6664147","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":463260998,"identity":"bb4fb1a2-f474-4841-ac40-fb23a3f0cf53","order_by":0,"name":"Hao Li","email":"","orcid":"","institution":"Tianjin University","correspondingAuthor":false,"prefix":"","firstName":"Hao","middleName":"","lastName":"Li","suffix":""},{"id":463260999,"identity":"4e0602b4-c95e-43de-ae76-ed9c846795ad","order_by":1,"name":"Hongbin Xie","email":"","orcid":"","institution":"Tianjin 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The motivation lies in addressing challenges related to geometric imperfections and varying assembly conditions that significantly impact joint reliability under dynamic loads. Experiments and numerical simulations were conducted to evaluate the effects of perpendicularity errors, fit clearance, and preload on the mechanical performance and failure modes of these joints. Dynamic tensile tests were performed using controlled loading conditions, and finite element modeling was employed to validate experimental findings and provide additional insights into stress distributions and failure mechanisms. The results demonstrated that perpendicularity errors significantly degrade joint performance. Specifically, joints with a 3° perpendicularity error parallel to the load direction exhibited a 64.40% reduction in energy absorption, whereas errors perpendicular to the load direction resulted in a 31.09% reduction. Excessive fit clearance changed the failure mode from tensile to shear, particularly at lower loading speeds. Increasing the preload effectively delayed adhesive layer delamination, reduced deformation, and enhanced overall joint strength. 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