余盛形状と応力集中率 : 溶接継手部の応力集中率・応力拡大係数について(第 1 報)(<特集>アーク溶接ロボットの現状)

概要

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The stress concentration factor and the stress intensity factor at the place, where fatigue and cold cracking frequently occur during manufacture and in service, have been studied using numerical analysis. This paper is the first part of three-part paper on the above subject. It firstly deals with the characteristics of the histgram, average value, and deviation of factors involved in the reinforcement of welded joint produced by various welding processes such as SMAW, SAW, EBW, CO_2W. The equation is secondly derived that related the stress concentration factor with the factors involved in the reinforcement of weld. The results are summarized as following : (1) The root radius of shielded manual arc welded joint was large in comparison with that of other welding processes such as EBW, CO_2W, SAW. (2) There did not exist the significance concerning the correlation among the factors involved in electron beam welded joint. (3) The difference between the real value and the predicted value of the stress concentration factor was less than or nearly equal to 0.3.
社団法人溶接学会の論文
1982-09-05