Al 合金点溶接継手の強さの研究(第 III 報) : 点溶接の配列と疲れ強さ

概要

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The previous report has shown the relationship between the arrangement of spot welds as one of design factors and the strength of multiple spot-welded joints under the static load. Succesively, for the same purpose, the repeated tensile-shear load test was carried out for multiple spot-welded Alclad heat-treatable Al alloy joints with various arrangements. As the result of this study, the relationships between the fatigue strength and the spacing, number and arrangement of spot-welded joints have been obtained. Basing upon these results, moreover, a method of determining the strength of multiple spot-welded joints by the simple joints have been found. That is, the stress concentration factor for the fatingue strength of multiple joints K_<mn> is give as follows. K_<mn>=rK_<1n>+(1-r)K_<1n>' K_<1n> and K_<1n>' are stress concentration factors obtained through the fatigue test on simple joints. r is the load-share ratio among the rows of multiple joints.
社団法人溶接学会の論文
1965-12-25