溶接継手の応力集中係数に及ぼす余盛形状因子と溶接条件の影響

概要

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This paper deals with the stress concentration analysis of weld reinforsements under tensile load, and the optimum weld condition for decreasing the stress concentration factoe(SCF). SCF was systematically calculated using a numerical analysis with various geometrical parameters. The stress field induced by a distributed force on a segment in an infinite plate was used as a fundamental solution to solove this problem. In the calculated range of the geometrical paramenters, SCF and the optimum weld condition were found to be as follows. (1) SCF is almost constant when a flank angle θ is over 60゜, when h/t is over 0.2, or when w/t is over 1.0; where h is the height of the reinforcement, w is the width of the reinforcement, t is the thickness of the plate. (2) SCF is almost proportional to the square root of t/ρ, where ρ is the radius of the notch. (3) In pulse arc welding, the best welding condition for decreasing SCF is the one to controll θ except ρ.
社団法人日本材料学会の論文
1990-11-15