{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T11:22:24Z","timestamp":1785410544845,"version":"3.56.0"},"reference-count":23,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2026,5,7]],"date-time":"2026-05-07T00:00:00Z","timestamp":1778112000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"the Zhejiang Provincial Natural Science Foundation of China","award":["LQ24E050011"],"award-info":[{"award-number":["LQ24E050011"]}]},{"award":["LQ24E050011"],"award-info":[{"award-number":["LQ24E050011"]}],"id":[{"id":"https:\/\/ror.org\/04aqat463","id-type":"ROR","asserted-by":"publisher"}]},{"name":"the Major Project of Science and Technology Innovation 2025 in Ningbo City, China","award":["2025Z205"],"award-info":[{"award-number":["2025Z205"]}]},{"name":"the Major Project of Science and Technology Innovation 2025 in Ningbo City, China","award":["2024Z149"],"award-info":[{"award-number":["2024Z149"]}]},{"DOI":"10.13039\/501100015015","name":"Ningbo University of Technology","doi-asserted-by":"crossref","award":["2022KQ34"],"award-info":[{"award-number":["2022KQ34"]}],"id":[{"id":"10.13039\/501100015015","id-type":"DOI","asserted-by":"crossref"}]},{"award":["2022KQ34"],"award-info":[{"award-number":["2022KQ34"]}],"id":[{"id":"https:\/\/ror.org\/037dym702","id-type":"ROR","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>According to investigation, the wheelset generally appears in a mass eccentric condition. Therefore, the finite element model of a wheelset\u2013track system with mass eccentricity was established in this study to investigate the dynamic response characteristics based on the frictional self-excited vibration theory. The research results show that, when the frictional self-excited vibration of the wheelset\u2013track system occurs, the unstable vibration characteristics of the wheelset\u2013track system corresponding to different dynamic imbalance values are almost the same. That is, the magnitude of the dynamic imbalance value has little influence on the frictional self-excited vibration of the wheelset\u2013track system. Simultaneously, from the perspective of the excitation frequency f of the wheel polygonal wear, it shows a trend of increasing frequency with an increase in the running speed. Ultimately, as the phase difference in mass eccentricity grows, pronounced instability becomes evident within the mid- to high-frequency ranges once friction-induced self-excitation arises in the wheelset\u2013track system. This condition readily promotes high-order polygonal wear on the wheel surfaces.<\/jats:p>","DOI":"10.3390\/ma19101918","type":"journal-article","created":{"date-parts":[[2026,5,7]],"date-time":"2026-05-07T14:05:46Z","timestamp":1778162746000},"page":"1918","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["The Impact of Wheelset Eccentricity on High-Order Polygonal Wear Based on the Theory of Frictional Self-Excited Vibration"],"prefix":"10.3390","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0009-0006-4697-4670","authenticated-orcid":false,"given":"Songhua","family":"Zhao","sequence":"first","affiliation":[{"name":"College of Mechanical and Automotive Engineering, Ningbo University of Technology, Ningbo 315211, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaonan","family":"Zhao","sequence":"additional","affiliation":[{"name":"College of Mechanical and Automotive Engineering, Ningbo University of Technology, Ningbo 315211, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pingping","family":"He","sequence":"additional","affiliation":[{"name":"College of Mechanical and Automotive Engineering, Ningbo University of Technology, Ningbo 315211, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9060-1448","authenticated-orcid":false,"given":"Furui","family":"Shi","sequence":"additional","affiliation":[{"name":"Department of Mechanical Engineering, University of Albert, Edmonton, AB T6G 2R3, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9754-9128","authenticated-orcid":false,"given":"Jie","family":"Zheng","sequence":"additional","affiliation":[{"name":"Department of Mechanical Engineering, University of Albert, Edmonton, AB T6G 2R3, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,5,7]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"317","DOI":"10.1007\/s40534-020-00222-x","article-title":"Polygonisation of railway wheels: A critical review","volume":"28","author":"Tao","year":"2020","journal-title":"Railw. 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