上海交通大学学报

上海交通大学学报（自然版） ›› 2012, Vol. 46 ›› Issue (05): 729-733.

• 机械仪表工程 • 上一篇    下一篇

缩比模型轮对与原型轮对过盈配合面微动幅值的相似关系

曾飞1,2，陈光雄1，周仲荣1   

  1. (1. 西南交通大学 牵引动力国家重点实验室摩擦学研究所, 四川 成都 610031; 2. 中国工程物理研究院 总体工程研究所, 四川 绵阳 621000)
  • 收稿日期:2011-06-22 出版日期:2012-05-28 发布日期:2012-05-28
  • 基金资助:

    长江学者和创新团队发展计划，国家自然科学基金项目(50775192, 51005192)

Similarity Relationship of Fretting Amplitudes Between Scaled-Model Wheel-Set and Prototype Wheel-Set

 ZENG  Fei-1, 2 , CHEN  Guang-Xiong-1, ZHOU  Zhong-Rong-1   

  1. (1. Tribology Research Institute, State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, China; 2. Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang 621000, China)
  • Received:2011-06-22 Online:2012-05-28 Published:2012-05-28

摘要： 通过量纲分析，推导出原型轮对与其几何相似及材料相同的模型轮对过盈配合面间微动幅值的相似关系.同时，利用有限元软件ANSYS将原型轮对与缩比为1∶2、1∶5和1∶10的模型轮对的过盈配合面间微动幅值进行数值对比分析.结果表明，当模型轮对与原型轮对的缩比为1∶n，模型轮对的过盈量选取为原型轮对的1/n，轴重载荷选取为原型轮对的1/n2时，模型轮对过盈配合面间的微动幅值为原型轮对的1/n.

关键词: 铁路轮对, 模型, 微动幅值, 量纲分析, 有限元法

Abstract:  In order to provide a reference for designing model tests and analyze the results of the model tests, the similarity relationship of fretting amplitudes of the interference fitting surfaces between the prototype wheel-set and its geometrically similar scaled-model one was deduced based on the dimensional analysis theory. The material of the prototype wheelset was the same as that of the scaled-model one. The results show that when the size of the model wheelset, the interference value and the axle load are 1/n, 1/n and 1/n2 of those of the prototype one respectively, the fretting amplitudes of the interference fitting surfaces of the model wheelset is 1/n of that of the prototype one. Finally, the fretting amplitudes of scaling 1∶2, 1∶5, and 1∶10 model wheelsets were compared with those of the prototype one from ANSYS analyses, respectively, which verifies the correctness of the similarity relationship.

Key words: railway wheelset, model, fretting amplitude, dimension analysis, finite element method

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