| 摘要 |
PROBLEM TO BE SOLVED: To provide an energy absorbing material of structure capable of remarkably reducing the peak load to be generated by a collision even in the case wherein transportation equipment collides with an obstacle. SOLUTION: The energy absorbing material comprises a wall surface member in a central area in the longitudinal direction and a wall surface member in an end area in the longitudinal direction. The wall surface member in the central area in the longitudinal direction is structured of an outside surface plate 210b, an inside surface plate 210a provided inside the outside surface plate and formed with a space on the inner peripheral side thereof, and a plurality of rib members 220 arranged between the outside surface plate and the inside surface plate so as to connect them to each other. The wall surface member in the end area in the longitudinal direction is structured of an outside surface plate, which is formed with a common space with the inner space, on the inner peripheral side thereof, and a plate member for closing the space formed on the inner peripheral side is arranged in the wall surface member formed with the energy absorbing material in the end area in the longitudinal direction. COPYRIGHT: (C)2007,JPO&INPIT
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