Simulation and Experimental Study on Strength of Medium and Low Speed Maglev Vehicle Levitation Frame Structure

Simulation and Experimental Study on Strength of Medium and Low Speed Maglev Vehicle Levitation Frame Structure | 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 Search Search ADVANCED SEARCH SCROLL This is a preprint and has not been peer reviewed.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. 19 February 2025 V1 Latest version Share on Simulation and Experimental Study on Strength of Medium and Low Speed Maglev Vehicle Levitation Frame Structure Authors : Yaqun Ma 0009-0008-4524-0215 , Miao Li , Weihua Ma [email protected] , Qinghui Liu , Shihui Luo , Yu Wang , and Cheng Lei Authors Info & Affiliations https://doi.org/10.22541/au.173995785.58319416/v1 171 views 75 downloads Contents Abstract Supplementary Material Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract The structural strength of the levitation frame is of critical importance for the safe operation of medium and low-speed maglev vehicles. However, the diverse load conditions in the engineering application environment and the current lack of relevant test and evaluation standards pose greater challenges to its reliability and safety. Accordingly, this paper combined classical numerical and dynamic modeling to obtain load boundaries. Subsequently, a full-factor finite element model was established and a full-scale test bench was built. The fourth strength theory and the modified Goodman-Smith fatigue limit diagram are used to systematically evaluate the structural strength and mark the weak points. Finally, a fatigue test with enhanced cyclic loading of 1×10 7 sinusoidal alternating loads is carried out, and the DPT-5 penetrant inspection agent is used for overall flaw detection. The research results show that: (1) the structural strength of the lightweight-designed levitation frame meets the evaluation requirements; (2) the weak points mostly appear at the welds, rib plates and corners of the longitudinal beams, arms and anti-rolling beams under multi-directional loads; (3) no fatigue cracks are found in the overall structure and each weak point after each stage of the tests by penetrant inspection. Supplementary Material File (20250218_manuscript.docx) Download 4.76 MB Information & Authors Information Version history V1 Version 1 19 February 2025 Copyright This work is licensed under a Non Exclusive No Reuse License. Keywords aluminium alloy fatigue strength fatigue testing finite element simulation strength evaluation Authors Affiliations Yaqun Ma 0009-0008-4524-0215 Southwest Jiaotong University State Key Laboratory of Rail Transit Vehicle System View all articles by this author Miao Li Southwest Jiaotong University State Key Laboratory of Rail Transit Vehicle System View all articles by this author Weihua Ma [email protected] Southwest Jiaotong University State Key Laboratory of Rail Transit Vehicle System View all articles by this author Qinghui Liu Southwest Jiaotong University State Key Laboratory of Rail Transit Vehicle System View all articles by this author Shihui Luo Southwest Jiaotong University State Key Laboratory of Rail Transit Vehicle System View all articles by this author Yu Wang CRRC Changchun Railway Vehicles Co Ltd View all articles by this author Cheng Lei Zhengzhou Railway Vocational and Technical College View all articles by this author Metrics & Citations Metrics Article Usage 171 views 75 downloads .FvxKWukQNSOunydq8rnd { width: 100px; } Citations Download citation Yaqun Ma, Miao Li, Weihua Ma, et al. Simulation and Experimental Study on Strength of Medium and Low Speed Maglev Vehicle Levitation Frame Structure. Authorea . 19 February 2025. DOI: https://doi.org/10.22541/au.173995785.58319416/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 . 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