Thermomechanical analysis in wheel-rail contact at the heat-affected zone for large radio telescope tracks
文献类型：期刊论文
| 作者 | Yin, Ruihua2; Lan, Hui-qing2; Xu, Qian1,3 |
| 刊名 | JOURNAL OF THERMAL STRESSES
 |
| 出版日期 | 2025-06-26 |
| 页码 | 20 |
| 关键词 | Finite element model heat-affected zone thermomechanical model track wheel-rail contact |
| ISSN号 | 0149-5739 |
| DOI | 10.1080/01495739.2025.2524704 |
| 产权排序 | 2 |
| 英文摘要 | Unlike small-aperture, movable radio telescopes with relatively low load capacity and inaccurate pointing precision, the construction of the largest radio telescope, QTT (110 m), faces critical challenges, such as wheel wear and fatigue cracks in the azimuth track. These issues are crucial for ensuring the telescope's ability to handle heavy loads while maintaining extremely high observational accuracy. Research on wheel-rail contact in large radio telescopes has only recently gained attention, with most existing studies focusing primarily on basic wheel-rail contact mechanics. Therefore, it is essential to apply well-established railway wheel-rail technologies and methods to address the specific wheel-rail contact challenges encountered by radio telescopes, while gradually developing a specialized methodology tailored to their needs. This paper presents tensile tests on QTT's heat-affected zone samples under varying temperatures and strain rates. By integrating the fracture stress method with a linear transformation approach, we derive the relevant parameters of the Johnson-Cook constitutive model. Additionally, a three-dimensional finite element Thermomechanical simulation model is developed to predict von Mises stress in the steady-state analysis of wheel-rail rolling contact, accounting for the combined effects of mechanical and thermal stresses. The study also examines temperature rise in the track under both pure rolling and sliding conditions. The simulation results provide valuable insights for optimizing the design of large radio telescopes and establish a foundation for future fatigue damage research. |
| WOS关键词 | BEHAVIOR |
| 资助项目 | National Key Research and Development Program of China |
| WOS研究方向 | Thermodynamics ; Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:001529066200001 |
| 出版者 | TAYLOR & FRANCIS INC |
| 资助机构 | National Key Research and Development Program of China |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/7944]  |
| 专题 | 新疆天文台_110米口径全可动射电望远镜（SmART）_技术成果 |
| 通讯作者 | Lan, Hui-qing |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Radio Astron, Urumqi, Peoples R China 2.Beijing Jiaotong Univ, Key Lab Vehicle Adv Mfg Measuring & Control Techno, Minist Educ, Beijing 100044, Peoples R China 3.Chinese Acad Sci, Xinjiang Astron Observat, Urumqi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yin, Ruihua,Lan, Hui-qing,Xu, Qian. Thermomechanical analysis in wheel-rail contact at the heat-affected zone for large radio telescope tracks[J]. JOURNAL OF THERMAL STRESSES,2025:20. |
| APA | Yin, Ruihua,Lan, Hui-qing,&Xu, Qian.(2025).Thermomechanical analysis in wheel-rail contact at the heat-affected zone for large radio telescope tracks.JOURNAL OF THERMAL STRESSES,20. |
| MLA | Yin, Ruihua,et al."Thermomechanical analysis in wheel-rail contact at the heat-affected zone for large radio telescope tracks".JOURNAL OF THERMAL STRESSES (2025):20. |
入库方式： OAI收割
来源：新疆天文台
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