Data-driven equivalent scaled model of coupler-buffer device design for subway vehicles

XU Ping; HUANG Qi; XU Tuo; WANG Ao; YANG Cheng-xing; WANG Shi-ming

doi:10.19818/j.cnki.1671-1637.2024.05.014

Volume 24 Issue 5

Oct. 2024

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XU Ping, HUANG Qi, XU Tuo, WANG Ao, YANG Cheng-xing, WANG Shi-ming. Data-driven equivalent scaled model of coupler-buffer device design for subway vehicles[J]. Journal of Traffic and Transportation Engineering, 2024, 24(5): 217-233. doi: 10.19818/j.cnki.1671-1637.2024.05.014

Citation:

XU Ping, HUANG Qi, XU Tuo, WANG Ao, YANG Cheng-xing, WANG Shi-ming. Data-driven equivalent scaled model of coupler-buffer device design for subway vehicles[J]. Journal of Traffic and Transportation Engineering, 2024, 24(5): 217-233. doi: 10.19818/j.cnki.1671-1637.2024.05.014

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Data-driven equivalent scaled model of coupler-buffer device design for subway vehicles

doi: 10.19818/j.cnki.1671-1637.2024.05.014

XU Ping^{1, 2
,},
HUANG Qi^{1, 2},
XU Tuo^{1, 2},
WANG Ao^{1, 2},
YANG Cheng-xing^{1, 2},
WANG Shi-ming^{1, 2}

1.
Key Laboratory of Traffic Safety on Track of Ministry of Education, Central South University, Changsha 410075, Hunan, China
2.
School of Traffic and Transportation Engineering, Central South University, Changsha 410075, Hunan, China

Funds:

National Key Research and Development Program of China 2021YFB3703801

More Information

Author Bio:
XU Ping(1971-), male, professor, PhD, E-mail: csxuping@126.com
Received Date: 2024-03-29
Available Online: 2024-12-20
Publish Date: 2024-10-25

Abstract

Abstract

In order to quickly obtain the collision characteristics of the coupler-buffer device in the subway vehicle collision, the design of the coupler-buffer device was studied, and the data-driven equivalent scaled model design method of the coupler-buffer device was proposed. By taking the rubber buffer in the coupler-buffer device as the research object, the equivalent scaled finite element model of the rubber buffer was established and verified by scaled tests. The response surface proxy models of the geometrical parameter and mechanical characteristic in the equivalent scaled rubber buffer were constructed. The expansion tubes in the coupler-buffer device were taken as the research object, and a finite element model of the 1/8 scaled expansion tube was established and verified by quasi-static compression tests. A crashworthiness index prediction model based on the geometrical parameters of the scaled expansion tube was constructed. Based on the collision test of the coupler-buffer device for a type of subway head car, the equivalent scaled model designs of the couple head, buffer, and expansion tube were carried out to verify the validity of the method. A 1/8 equivalent scaled subway head car collision test was carried out to obtain the mechanical property curves, which were then restored and compared with the full-scale subway head car finite element simulation results. Research results show that the determination coefficients of the response surface proxy models of the peak crushing force and total mean force in the equivalent scaled rubber buffer are 0.994 and 0.992, respectively. In the crashworthiness index prediction models of the 1/8 scaled expansion tube, the determination coefficients of the platform mean force and specific energy absorption in the multilayer perceptron mode are both 0.999. In the results of the equivalent scaled coupler-buffer device for the subway vehicle test and the full-scale subway head car finite element simulation, the trends of force-displacement curves of the scaled test and the simulation test are the same, and the errors of total mean force, peak crushing force of the buffer are 1.11% and 5.62%, and the errors of platform mean force and specific energy absorption of the expansion tube are 0.59% and 2.51%, respectively. It can be seen that the data-driven design method based on the coupler-buffer device for subway vehicles can better be applied to the design of the equivalent scaled coupler-buffer device, reducing the cost of research and design in the coupler-buffer device while ensuring the accuracy of the equivalent scaled model.
- subway vehicle,
- coupler-buffer device,
- data-drive,
- equivalent scaled model,
- numerical simulation,
- parameter design

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References(35)

References

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Data-driven equivalent scaled model of coupler-buffer device design for subway vehicles

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