Damage failure analysis of carbon fiber composite laminates under bending load

Damage failure analysis of carbon fiber composite laminates under bending load | 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 Damage failure analysis of carbon fiber composite laminates under bending load She Lingjuan, Fu Ling, Zhang Lei, Long Xiangyun, Zhang Peng, Yan Dulei This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-9432224/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 7 You are reading this latest preprint version Abstract The damage failure analysis of carbon fiber reinforced composite material (CFRP) main loading structure under the action of excessive bending load is extremely important. The traditional damage analysis methods have problems such as simple failure criterion, inapplicability of linear assumptions, and insufficient consideration of interlayer damage. To this end, this study uses the finite element simulation software as a platform to establish 3D models for simulating the damage characteristics of carbon fiber-reinforced composite laminates, and embeds the extended 3D Hashin failure criterion in the software subroutine to elucidate the phenomenon of intralaminar failure. The study adopts a bilinear traction-separation model to characterize the interlayer damage, and innovatively combines stress-damage analysis and experimental microscopic characterization, thus revealing the damage emergence mechanism and evolution law within the composite laminates under bending load. Taking 8-layer laminate as an example, the results of simulation analysis and experimental verification show that the calculation accuracy of the proposed model has been improved by 5%~10% compared with the traditional analysis method. The model has high computational accuracy for both the emergence and evolution of intra- and interlayer damage, which can provide an important theoretical basis and technical support for the design and optimization of CFRP components. composite material bending load failure criterion progressive damage numerical simulation Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Under Review Version 1 posted Reviews received at journal 17 May, 2026 Reviewers agreed at journal 11 May, 2026 Reviewers agreed at journal 10 May, 2026 Reviewers invited by journal 07 May, 2026 Editor assigned by journal 16 Apr, 2026 Submission checks completed at journal 16 Apr, 2026 First submitted to journal 15 Apr, 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. 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-9432224","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":641528797,"identity":"933ac688-ee7e-43c4-a2d4-005918ffa285","order_by":0,"name":"She 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The traditional damage analysis methods have problems such as simple failure criterion, inapplicability of linear assumptions, and insufficient consideration of interlayer damage. To this end, this study uses the finite element simulation software as a platform to establish 3D models for simulating the damage characteristics of carbon fiber-reinforced composite laminates, and embeds the extended 3D Hashin failure criterion in the software subroutine to elucidate the phenomenon of intralaminar failure. The study adopts a bilinear traction-separation model to characterize the interlayer damage, and innovatively combines stress-damage analysis and experimental microscopic characterization, thus revealing the damage emergence mechanism and evolution law within the composite laminates under bending load. 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