| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a member in which both excellent insensitivity to a collision angle and excellent shock absorbing capacity are made compatible while the member has various shapes of a thin-walled cross section. Ž<P>SOLUTION: A hollow columnar steel member has a rectangular cross section, and torsion is formed on a part or on the whole part thereof in its longitudinal direction. The hollow columnar steel member has flanges on the outsides of the corners or on the outsides of the parts between the corners on the whole length in the longitudinal direction. When, in a cross section perpendicular to the longitudinal direction, an average length of vertical sides and lateral sides is made an average distance W[M] between ridge lines, it is preferable that the torsion is formed within the range of W[M] in the longitudinal direction from the input side of collision force and that the torsion is formed on the plurality of portions in the longitudinal direction. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
|
