Research on contact characteristics and fatigue life of main shaft bearings in wind turbines under flexible constraints

Research on contact characteristics and fatigue life of main shaft bearings in wind turbines under flexible constraints | Authorea try { document.documentElement.classList.add('js'); } catch (e) { } var _gaq = _gaq || []; _gaq.push(['_setAccount', 'G-8VDV14Y67G']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); Skip to main content Preprints Collections Wiley Open Research IET Open Research Ecological Society of Japan All Collections About About Authorea FAQs Contact Us Quick Search anywhere Search for preprint articles, keywords, etc. Search Search ADVANCED SEARCH SCROLL This is a preprint and has not been peer reviewed. Data may be preliminary. 3 January 2025 V1 Latest version Share on Research on contact characteristics and fatigue life of main shaft bearings in wind turbines under flexible constraints Authors : Yanshuang Wang 0000-0002-0293-8970 [email protected] , Fuxiao Yu , Gaofeng Wang , Jianfeng Li , and Wenbin Li Authors Info & Affiliations https://doi.org/10.22541/au.173586913.32729718/v1 172 views 98 downloads Contents Abstract Supplementary Material Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract A 1:1 scale test platform was constructed to accurately simulate the working conditions and flexible constraints of wind turbine bearings. The research focuses on the main bearing of a 4.5MW wind turbine, where a finite element model of the main shaft system is established. The impact of ring deformation, load conditions, and bearing geometric parameters on the contact characteristics and fatigue life of the main bearing were investigated under the flexible constraints imposed by a hollow main shaft and thin-walled bearing housing. The results indicate that in comparison to the rigid ring model, the fatigue life of the main bearing is reduced in the case of the flexible ring model. Additionally, the location of maximum stress occurrence has shifted towards the larger end of the roller when compared to the rigid ring model. The contact load in the primary load-carrying region of the main bearing increases with radial load and tilting moment, while the contact load in the non-load-carrying region exhibits an inverse relationship. The number of carrying rollers increases with the increase of axial load, leading to a decrease in the contact force of the bearing. However, once all the rollers are loaded, the contact force increases proportionally with the axial load. As the contact angle increases, the contact load of the tapered roller bearing (TRB) decreases. As the radial clearance increases in the positive direction, the contact stress of the bearing increases and consequently leads to a decrease in fatigue life. The fatigue life of the bearing can be increased by applying a negative clearance or axial preload of approximately -0.5mm. The increase in interference between the inner ring and the spindle leads to a reduction in bearing contact stress, thereby enhancing its fatigue life. Supplementary Material File (research on fatigue life of main shaft bearings.docx) Download 21.92 MB Information & Authors Information Version history V1 Version 1 03 January 2025 Copyright This work is licensed under a Non Exclusive No Reuse License. Keywords contact characteristics fatigue life flexible ring main shaft bearing Authors Affiliations Yanshuang Wang 0000-0002-0293-8970 [email protected] Qilu University of Technology Faculty of Mechanical Engineering View all articles by this author Fuxiao Yu Qilu University of Technology Faculty of Mechanical Engineering View all articles by this author Gaofeng Wang Luoyang Bearing Science and Technology Co Ltd View all articles by this author Jianfeng Li Shandong University View all articles by this author Wenbin Li 4Yantai Tiancheng Machinery Co Ltd View all articles by this author Metrics & Citations Metrics Article Usage 172 views 98 downloads .FvxKWukQNSOunydq8rnd { width: 100px; } Citations Download citation Yanshuang Wang, Fuxiao Yu, Gaofeng Wang, et al. Research on contact characteristics and fatigue life of main shaft bearings in wind turbines under flexible constraints. Authorea . 03 January 2025. DOI: https://doi.org/10.22541/au.173586913.32729718/v1 If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download. For more information or tips please see 'Downloading to a citation manager' in the Help menu . Format Please select one from the list RIS (ProCite, Reference Manager) EndNote BibTex Medlars RefWorks Direct import Tips for downloading citations document.getElementById('citMgrHelpLink').addEventListener('click', function() { popupHelp(this.href); return false; }); $(".js__slcInclude").on("change", function(e){ if ($(this).val() == 'refworks') $('#direct').prop("checked", false); $('#direct').prop("disabled", ($(this).val() == 'refworks')); }); View Options View options PDF View PDF Figures Tables Media Share Share Share article link Copy Link Copied! Copying failed. 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