Journal of Shanghai Jiao Tong University

Journal of Shanghai Jiaotong University ›› 2012, Vol. 46 ›› Issue (05): 729-733.

• Mechanical instrumentation engineering • Previous Articles     Next Articles

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

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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