A train’s crashworthiness responses are directly affected by the vehicle weight M, train collision speed V, and empty stroke D. This study investigated the influences of M, V, and D on train crashworthiness. A one-dimensional multi-body dynamics model for a B-type metro train was created and verified. Approximate models were established for the total compression displacement (TS) and overall average collision deceleration (TMA) based on M, V, and D, and a novel method was proposed for quickly predicting the output response of a train’s crashworthiness. The effects of the various parameters on TS and TMA were investigated, and a multi-objective optimization for minimizing TS and TMA was conducted. The results indicated that V has the greatest influence on TS and TMA, followed by M, and then D; M has a positive effect on TS and negative effect on TMA, whereas D has a negative effect on both TS and TMA; V has a positive effect on TS, but for TMA, the effect changes from positive to negative when V increases to 23 km/h. The optimized metro train has higher integrity in the passenger living space and a lower train collision average deceleration, and the crashworthiness is significantly improved.


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    Title :

    Parameter study and multi-objective optimization for crashworthiness of a B-type metro train


    Contributors:
    Liu, Yanwen (author) / Yang, Bing (author) / Xiao, Shou-ne (author) / Zhu, Tao (author) / Yang, Guangwu (author) / Xiu, Ruixian (author)


    Publication date :

    2022-01-01


    Size :

    18 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




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