On the increase of the flutter boundary and energy harvesting of subsonic aeroelastic systems using the concept of piezoaeroviscoelasticity.

On the increase of the flutter boundary and energy harvesting of subsonic aeroelastic systems using the concept of piezoaeroviscoelasticity. | 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 On the increase of the flutter boundary and energy harvesting of subsonic aeroelastic systems using the concept of piezoaeroviscoelasticity. Antonio Marcos G. de Lima, Marcelo Delgado-Filho, Alice da Silva, and 1 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4797251/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 03 Feb, 2025 Read the published version in Journal of the Brazilian Society of Mechanical Sciences and Engineering → Version 1 posted 4 You are reading this latest preprint version Abstract This paper shows the possibility of increasing the energy harvesting and subsonic flutter boundary of aeroelastic systems using viscoelastic materials and shunted piezoceramics, simultaneously. For this purposes, it is used here a two degrees of freedom typical section subjected to an unsteady airflow containing discrete viscoelastic mounts and attached to a resistive piezo-shunted circuit. In the modeling of the piezoaeroviscoelastic problem, the complex modulus approach combined with the concept of shift factor and reduced frequency has been used to represent the frequency- and temperature-dependent behavior of the viscoelastic substructure. To model the unsteady aerodynamic loadings acting on the system, it was assumed the well-known linearized thin airfoil theory. Numerical simulations were performed for some design parameters and subsonic flight conditions to demonstrate the main features of the proposed method and the possibility of increasing the dynamic stability and power generation of the piezoaeroviscoelastic system. In addition, a parametric study has been performed to evaluate the degree of influence of operating temperature and load resistance on the stability and energy harvesting. Flutter suppression energy harvesting subsonic aeroelasticity airfoil section viscoelastic materials piezo-shunt-damping circuits Figures Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Full Text Cite Share Download PDF Status: Published Journal Publication published 03 Feb, 2025 Read the published version in Journal of the Brazilian Society of Mechanical Sciences and Engineering → Version 1 posted Reviewers agreed at journal 28 Jul, 2024 Reviewers invited by journal 28 Jul, 2024 Editor assigned by journal 26 Jul, 2024 First submitted to journal 24 Jul, 2024 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-4797251","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":332673666,"identity":"3951d4b3-4af3-46e8-af9d-d481dcf8a9aa","order_by":0,"name":"Antonio Marcos G. de 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9","display":"","copyAsset":false,"role":"figure","size":56914,"visible":true,"origin":"","legend":"\u003cp\u003eVg curves for various values of operating temperature for the aeroviscoelastic system.\u003c/p\u003e","description":"","filename":"floatimage9.png","url":"https://assets-eu.researchsquare.com/files/rs-4797251/v1/8052498251fdf64575ad5942.png"},{"id":63084916,"identity":"0c2a765b-4233-4b9f-a482-33201eaae199","added_by":"auto","created_at":"2024-08-23 02:38:35","extension":"png","order_by":10,"title":"Figure 10","display":"","copyAsset":false,"role":"figure","size":83637,"visible":true,"origin":"","legend":"\u003cp\u003eFlutter speed versus temperature for the aeroviscoelastic system.\u003c/p\u003e","description":"","filename":"floatimage10.png","url":"https://assets-eu.researchsquare.com/files/rs-4797251/v1/108040e0c9bff4c205e744ec.png"},{"id":63084654,"identity":"bcf8afb5-5c5b-486d-8a6a-bc963b74948e","added_by":"auto","created_at":"2024-08-23 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