{"paper_id":"0ab4dfd6-5113-48ef-9d5f-a0f0861de8ea","body_text":"Mitigating Vibrations in Power Lines with a Moving Nonlinear Absorber | 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 Mitigating Vibrations in Power Lines with a Moving Nonlinear Absorber Ehab Basta, Sunit K. Gupta, Oumar R. Barry This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-6431058/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 Aeolian vibrations are a major cause of fatigue failure in power transmission lines. Traditionally, these vibrations are mitigated using fixed vibration absorbers, such as Stockbridge dampers. However, the performance of these dampers is highly sensitive to their natural frequency and optimal placement, limiting their effectiveness. To address these limitations, moving vibration absorbers have been introduced. Despite their potential, existing studies have largely overlooked the nonlinearities associated with wind-induced lift forces and the moving absorber. This study addresses this gap by incorporating these nonlinearities from wind flow and moving vibration absorbers. We model the fluctuating nonlinear lift force using a van der Pol oscillator and represent the moving absorber’s nonlinear behavior with cubic stiffness. A detailed numerical analysis compares the performance of nonlinear and linear moving absorbers at resonance. Results show that nonlinear absorbers significantly reduce vibration amplitudes, outperforming their linear alternatives. Additionally, parametric analyses are conducted to optimize the configuration parameters of the moving vibration absorber, such as absorber velocity, nonlinear stiffness, and damping, to enhance the stability and efficiency of power transmission lines. Notably, we observe that higher absorber velocities lead to more effective vibration damping without causing material fatigue. These findings present a promising solution for improving the stability and efficiency of power transmission lines under wind-induced vibrations. Aeolian vibration Vortex-induced vibration Moving absorber Nonlinear absorber Powerline The van der Pol Oscillator 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-6431058\",\"acceptedTermsAndConditions\":true,\"allowDirectSubmit\":true,\"archivedVersions\":[],\"articleType\":\"Research Article\",\"associatedPublications\":[],\"authors\":[{\"id\":453736108,\"identity\":\"fa9fae25-aa63-4676-a1a9-2bbe2e1ca176\",\"order_by\":0,\"name\":\"Ehab Basta\",\"email\":\"\",\"orcid\":\"\",\"institution\":\"Virginia Tech\",\"correspondingAuthor\":false,\"prefix\":\"\",\"firstName\":\"Ehab\",\"middleName\":\"\",\"lastName\":\"Basta\",\"suffix\":\"\"},{\"id\":453736109,\"identity\":\"172801c2-75f2-470b-9651-4c867f48de21\",\"order_by\":1,\"name\":\"Sunit K. 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Traditionally, these vibrations are mitigated using fixed vibration absorbers, such as Stockbridge dampers. However, the performance of these dampers is highly sensitive to their natural frequency and optimal placement, limiting their effectiveness. To address these limitations, moving vibration absorbers have been introduced. Despite their potential, existing studies have largely overlooked the nonlinearities associated with wind-induced lift forces and the moving absorber. This study addresses this gap by incorporating these nonlinearities from wind flow and moving vibration absorbers. We model the fluctuating nonlinear lift force using a van der Pol oscillator and represent the moving absorber’s nonlinear behavior with cubic stiffness. A detailed numerical analysis compares the performance of nonlinear and linear moving absorbers at resonance. Results show that nonlinear absorbers significantly reduce vibration amplitudes, outperforming their linear alternatives. 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