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|1. (WO2016060255) IMPACT ABSORPTION MEMBER|
|Applicants:||NIPPON STEEL & SUMITOMO METAL CORPORATION
|Title:||IMPACT ABSORPTION MEMBER|
An impact absorption member 10 is configured so that: energy absorption by the impact absorption member 10 is ensured; the impact absorption member 10 is lightweight; and the impact absorption member 10 absorbs an axially applied impact load by periodic buckling thereof. The impact absorption member 10 is provided with: a body 20 consisting of a metallic plate and having a polygonal shape in a cross-section taken perpendicularly to the axial direction; and an intermediate plate 30 consisting of a metallic plate and provided in the axial direction within a hollow space within the body. The polygonal shape of the body 20 has a pair of facing long sides (20a, 20b). The intermediate plate 30 is joined to each of the long sides (20a, 20b) of the polygonal shape of the body 20. The plate thickness t1 (mm) of the body 20 and the plate thickness t2 (mm) of the intermediate plate 30 satisfy the relationship of 1.3×t1≤t2.