REINFORCEMENT STRUCTURE OF SHEET MATERIAL JOINING PORTION

摘要

PROBLEM TO BE SOLVED: To reduce the stress concentration of a sheet material joining portion without causing increase in cost and weight. SOLUTION: A ridge portion 4 is formed around the joining portion 2 of the sheet material 1 to be joined with another member. The ridge portion 4 is formed in a substantially annular shape or a substantially arc shape with the joining portion 2 as the center. COPYRIGHT: (C)2007,JPO&INPIT