2DEvaluation of safety in seated areas under train set collision conditions
  • Clarification of the behavior of seated passengers through simulation using human body and dummy models under train set collision conditions.
  • Proposal of safety measures for seated areas in case of collision.
  •    The RTRI performed human factors engineering for commuter and suburban service trains to reduce the amount of damage that occurs in collisions.
       Assuming a train collision at a speed of 30km/h or lower, the RTRI implemented simulation analysis of seated FEM human body models (Fig. 1) and proposed installation nearby seating to ensure safety when a collision occurs. The study showed that the long seat plate-type windscreen causes less deformation to the chest region than the pipe-type version, thus reducing damage to the chest. Lower strength in the cushioning material and framework of cross-seat backrest cushioning reduces the probability of damage caused by their deformation, which suppresses collision acceleration at the head. However, further studies are necessary to determine the extent to which this strength can be reduced.
       Through impact tests on dummy passengers (Fig. 2), the RTRI investigated contact points and timing on seats, human body acceleration and other behavior in collision conditions, confirming the effect of the plate-type long seat windscreen outlined above (Fig. 3).
       The RTRI intends to promote further research into passenger cabin safety in the case of front- and rear-end collision conditions,etc. This study was promoted with a subsidy from the Ministry of Land, Infrastructure and Transport.



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