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ZHENG Xiao-ming, WEN Yong-peng, SHANG Hui-lin, LIU Yue-jie. Evolutionary structure topology optimization method of rail wheel web plate considering UIC strength criterion[J]. Journal of Traffic and Transportation Engineering, 2019, 19(5): 84-95. doi: 10.19818/j.cnki.1671-1637.2019.05.009
Citation: ZHENG Xiao-ming, WEN Yong-peng, SHANG Hui-lin, LIU Yue-jie. Evolutionary structure topology optimization method of rail wheel web plate considering UIC strength criterion[J]. Journal of Traffic and Transportation Engineering, 2019, 19(5): 84-95. doi: 10.19818/j.cnki.1671-1637.2019.05.009
shu

Evolutionary structure topology optimization method of rail wheel web plate considering UIC strength criterion

doi: 10.19818/j.cnki.1671-1637.2019.05.009
  • 1.

    School of Urban Railway Transportation, Shanghai University of Engineering Science, Shanghai 201620, China

  • 2.

    School of Mechanical Engineering, Shanghai Institute of Technology, Shanghai 201418, China

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  • Author Bio:

    ZHENG Xiao-ming(1994-), male, graduate student, 631660792@qq.com

  • Received Date: 2019-04-16
  • Publish Date: 2019-10-25
    Abstract
  • To improve the structural performance of rail wheels, a structural optimization model of rail wheels was established by using the evolutionary structure topology optimization method. The double S-shaped rail wheel was used as the design blueprint, the design field of rail wheel web plate was analyzed, and the evolutionary structure topology optimization method of the rail wheel web plate was put forward under multi-working conditions. The optimization idea using the evolutionary structure topology optimization method to achieve the structural stress homogenization was introduced. According to the standard Overall Wheel Technical Inspection(UIC 510-5: 2003), considering the rail wheels in linear working condition, curved working condition and passing working condition of ballast, respectively, not only was the topology optimization structure obtained under the joint action of 3 typical working conditions, but also six topology structures were obtained under the action of 3 typical working conditions in turn. The stress conditions of wheel web plate before and after optimization were compared, and the web plate stress features of the optimized wheels were verified by using the finite element tool. The correctness and effectiveness of evolutionary structural topology optimization method were proved. Research result shows that the evolutionary structure topology optimization method is suitable for the topology optimization of rail wheels. Under the premise that the wheel weight does not increase, the thickness of wheel web plate increases and is unequal, the stress concentration reduces effectively, and the structural stress reduces. Compared with the original double S-shaped wheels, the structural performances of the optimized six wheel models improve by 16.6%, 20.7%, 22.5%, 21.3%, 20.1%, and 19.5%, respectively. The maximum structural stresses of the optimized wheel web plates of scheme 3 reduce by 4.0%, 14.5%, and 6.7% under 3 working conditions, respectively. The research contributes to the improvement of structural strength of the rail wheels, and has important reference value for the optimization of rail wheel structure under the multi-working coupling condition.

     

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