STRENGTH MEMBER

摘要

PROBLEM TO BE SOLVED: To provide an extruded shape capable of simplifying the boring work and the mounting piece molding work to be mounted to another member, and lowering a peak value of a yielding point stress (equivalent to initial buckling load) to the axial compression load. SOLUTION: A partition 3 defining plural chambers 4 is inwardly collapsed to shear a connection part of a frame 2 and the partition 3, and only an end part of the extruded shape 1 is formed into one chamber 6.