Abstract
This study treats the reduction of the degree of the passenger injury by analyzing the behavior of the passenger sitting on a box seat at the time of the collision outbreak of the railroad carriage by simulation. Judgment the degree of the passenger injury was enabled by development the behavior analysis program of the passenger with C language and inputting a decelerating acceleration wave pattern at the time of the vehicle collision obtained by the finite element analysis. Injury judgment values decreased by more than 30% by optimizing to assume the spring constant of the seat as a design variable to reduce an injury judgment value.
