すみ肉溶接継手の曲げ疲労寿命の推定と鋼管構造溶接継手の疲労解析への適用
鋼すみ肉溶接継手の曲げ疲労に関する研究(第二報)
1983 年 1 巻 1 号 p. 70-78
詳細
1983 年 1 巻 1 号 p. 70-78
Fatigue life prediction of welded joints under plane bending load and its application to fatigue behaviour analysis of welded tubular joints were performed on the basis of the results stated in the 1st Report.
The results are summarized as follows.
(1). The fatigue crack initiation life Nc at the weld toe could be evaluated using strain-controlled fatigue concepts.
(2). The fatigue failure life Nf of welded joints under plane bending could be estimated using edge crack model with an initial crack size (a/T)i=0.0125.
(3). The fatigue life Nc and Nf in welded tubular T-and X-joints also could be evaluated from the above procedures by using hot-spot stress range Δσa in stead of Δσb.
