Experimental Study on Occupant Secondary Impact Injury for High-speed Trains

doi:10.3901/JME.2025.15.314

Abstract

Abstract: Train collision is one of the most serious rail accidents in China. The development and construction of a professional train occupant secondary impact system and performing occupant crash test is of great significance for scientifically reproducing the occupant impact injury responses and evaluating the safety performance of trains. Based on the previous train full-scale crash test system, the train occupant secondary impact system is successfully constructed. The occupant secondary crash injury tests for high-speed trains are performed using the Hybrid Ⅲ 50th dummy. The influence of seat deflection and foldable table on occupant impact injury responses is studied. Results show that the maximum head acceleration peak value is 30g but the maximum（Head injury criteria） HIC is 17.38. The head injury is not serious in the low-speed collision specified by the railway crashworthiness standard. When opening the table, the occupant’s chest injury is not obvious, but the neck-table collision and “chokehold” may threaten the occupant’s life. Experimental data provides practical data help for interior optimization design and formulation of interior collision safety standards for high-speed trains in China.

Key words: high-speed train, occupant secondary impact, crash injury, train crashworthiness, crash test system design

CLC Number:

U270

DENG Gongxun, XU Tuo, HU Zhengsheng, PENG Yong. Experimental Study on Occupant Secondary Impact Injury for High-speed Trains[J]. Journal of Mechanical Engineering, 2025, 61(15): 314-323.

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