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Energy absorption design for crash energy management passenger trains based on scaled model

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Abstract

To improve the passive safety protection of crash energy management (CEM) passenger train, this paper presents the energy absorption design study for CEM passenger trains based on a 1/8th-scale model. By analysing the similarity of thin-walled structures for CEM trains, the similitude ratios of physical parameters were obtained and used to design the scaled train model. The dynamic responses of scaled train were analysed through finite element simulation and collision test. Compared to the test results, the errors of dynamic responses in simulation were within 1.79%, indicating that the finite element model of scaled train was accurate and can be used to study the energy absorption characteristics of CEM passenger trains. To improve the crashworthiness of CEM passenger trains, selecting six key parameters affecting energy absorption of head car and middle car as design variables, and taking the maximum energy absorption of head car and the minimum standard deviation of energy absorption for middle cars as targets, a multi-objective optimization was carried out to gain the optimal solution of key energy absorption parameters. Optimization results indicated that the energy absorption of head car has been increased by 195.20%, and the standard deviation of the energy absorption of middle cars has been decreased by 81.06%.

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Acknowledgements

The authors would like to acknowledge the financial support from the National Natural Science Foundation of China [Grant No. 52072054], the Basic Natural Science and Frontier Technology Research Program of the Chongqing Municipal Science and Technology Commission [Grant No. cstc2018jcyjAX0422] and the Science and Technology Research Program of Chongqing Municipal Education Commission [Grant No. KJQN202100727]. The authors would also thank AJE (www.aje.com) for its linguistic assistance during the preparation of this manuscript.

Funding

This work was supported by the National Natural Science Foundation of China [Grant No. 52072054], the Basic Natural Science and Frontier Technology Research Program of the Chongqing Municipal Science and Technology Commission [Grant No. cstc2018jcyjAX0422] and the Science and Technology Research Program of Chongqing Municipal Education Commission [Grant No. KJQN202100727].

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Authors and Affiliations

  1. School of Mechanotronics & Vehicle Engineering, Chongqing Jiaotong University, Chongqing, 400074, China

    Sisi Lu, Pan Wang, Weitao Ni, Kaibo Yan & Shuen Zhao

  2. School of Traffic & Transportation Engineering, Central South University, Changsha, 410075, China

    Chengxing Yang & Ping Xu

Authors
  1. Sisi Lu
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  2. Pan Wang
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  3. Weitao Ni
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  4. Kaibo Yan
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  5. Shuen Zhao
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  6. Chengxing Yang
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  7. Ping Xu
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Correspondence to Kaibo Yan.

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Lu, S., Wang, P., Ni, W. et al. Energy absorption design for crash energy management passenger trains based on scaled model. Struct Multidisc Optim 65, 2 (2022). https://doi.org/10.1007/s00158-021-03116-6

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