金属積層板の引張曲げにおける破断荷重

概要

論文の詳細を見る
In press forming, fracture of a sheet mostly occurs at a punch corner because the sheet is subjected to severe stretch bending there. The fracture load in stretch bending for sheet metal laminates has been investigated by performing stretch bending tests on a two-ply laminate of aluminum/SUS430 and a three-ply laminate of SUS304/aluminum/SUS430. The results show that the fracture load becomes lower with decreasing die-radius. For a two-ply laminate consisting of weak/strong layers, the fracture load is lower when the weak metal is located at a die side compared to the case of reversed sheet-set condition. An analytical method for the determination of the fracture load has also been presented. The predicted fracture loads are in agreement with the corresponding experimental results.
一般社団法人日本機械学会の論文
1995-12-25