JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE) ›› 2016, Vol. 46 ›› Issue (2): 116-121.doi: 10.6040/j.issn.1672-3961.0.2015.326

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Investigation on temperature characteristic and relaxation mechanism for high-speed train axle-bearing system

LIU Yihui1, LI Lin2, LIU Kai1, SUN Jie1*   

  1. 1. School of Mechanical Engineering, Shandong University, Jinan 250061, Shandong, China;
    2. School of Science, Harbin Institute of Technology at Weihai, Weihai 264209, Shandong, China
  • Received:2015-10-12 Online:2016-04-20 Published:2015-10-12

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Abstract: For the mechanism of axle-bearing relaxation which was easy to occur in high-speed train was revealed and the preventive measures were given. In this paper, the finite element model of temperature characteristics of shaft-bearing under working conditions was established and evaluated with ABAQUS. And bearing components' temperature rise under different speeds was analysized. Combined with the material expansion coefficient test experiment and the experiment for getting matching relations between temperature rise and the bearing inner ring quantity expansion, the temperature field variation characteristics for working components of locomotive were studied. The results of simulation and experiment showed that the amount of interference between the axle and bearing inner ring was reduced with the influence of temperature rise.Finally, the influence between temperature rise and axle-bearing was obtained. The mechanism of relaxation was revealed and the guiding parameters of interference and temperature were given.

Key words: relaxation, heat expansion deformation, magnitude of interference, temperature rise, swelling capacity

CLC Number: 

  • TH133.3
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