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International Journal of Automotive Technology > Volume 23(5); 2022 > Article
International Journal of Automotive Technology 2022;23(5): 1483-1490.
doi: https://doi.org/10.1007/s12239-022-0129-4
Jaeho Shin 1, Kyungjin Kim 1, Kyeonghee Han 1, Jeong Min In 2, Hyung-Jin Chang 2, Sojung Shim 2, Siwoo Kim 2
1School of Mechanical and Automotive Engineering, Kyungil University
2Vehicle Safety Research Office, Korea Automobile Testing and Reserch Institute
PDF Links Corresponding Author.  Jaeho Shin  , Email. jhshin@kiu.ac.kr
For the successful introduction of buses fueled by hydrogen, the safety of hydrogen buses is being discussed and investigated by governments and research institutes. This study is focused on evaluation approaches for hydrogen bus crashworthiness with hydrogen fuel systems located on the roof structure. Based on rollover safety regulations, the primary countermeasures are not only to ensure that there is no contact between the hydrogen fuel system and other parts of the vehicle or the ground, but also to confirm adequate occupant residual space for occupant protection during rollover accidents. Thus, the experimental concept to check safety countermeasures along with computational approaches and procedures are discussed with regards to the rollover test loading conditions in this study. A rollover test setup process was investigated and a hydrogen bus rollover test was performed. Furthermore, a hydrogen bus FE model has been developed and the structural response was verified. The results and conclusion provide the conceptual framework to evaluate hydrogen bus crashworthiness.
Key Words: Hydrogen bus, Crashworthiness, Rollover accident, Roof structure, Experimental concept, Computational approach, Crash simulation
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