Second International Conference on Rail Transportation
Research on Braking Safety of the Triple Locomotive in a 10,000-Tonne Heavy-Haul Train
Publication: ICRT 2021
ABSTRACT
To hill-start a 10,000-tonne heavy haul train on a mountainous railway, a triple locomotive unit is employed to provide traction power. Meanwhile, large dynamic braking forces are usually applied to control the train speed at the downhill section instead of air braking forces. The sustained dynamic braking forces influence the coupler stability, which further affects the running safety of the locomotives. To analyze the running safety of the locomotives under large dynamic braking forces, a multi-locomotive model is established and validated, and the dynamic performance of the locomotives on tangent track, curved track, and turnout under different dynamic braking forces are simulated. The results indicated that the large dynamic braking force leads to a large coupler yaw angle, which causes a large lateral component of coupler force and intensifies the wheel-rail interaction. To enhance the running safety of the locomotives, the applied dynamic braking force should be limited according to practical line conditions.
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ACKNOWLEDGMENT
The authors would like to thank the State Key Laboratory of Traction Power for providing equipment and materials to this project. The authors would also like to acknowledge the Xplorer Prize for sponsoring the project. This study is supported by the National Natural Science Foundation of China (Grant No. 51825504, U19A20110)
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Information & Authors
Information
Published In
ICRT 2021
Pages: 237 - 243
Editors: Wanming Zhai, Ph.D., Southwest Jiaotong University, Kelvin C. P. Wang, Ph.D., Oklahoma State University, and Shengyang Zhu, Ph.D., Southwest Jiaotong University
ISBN (Online): 978-0-7844-8388-6
Copyright
© 2022 American Society of Civil Engineers.
History
Published online: Feb 8, 2022
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