スティフナ溶接部のホットスポット応力に及ぼす付加物寸法の影響
2001 年 8 巻 32 号 p. 9-16
詳細
2001 年 8 巻 32 号 p. 9-16
A hot spot stress (HSS) concept is expected to be widely used in a fatigue assessment of welded steel structures. In order to investigate an influence of welded attachment size on HSS, finite element analyses were conducted on longitudinally stiffened joints. As a result, it was revealed that weld leg length affects HSS values but not local stress concentration field. Based on this fact, revised two-point extrapolating method for HSS calculation was proposed. In case of a very small stiffener, both the length and height of a stiffener influence HSS. But for a lager stiffener, the influence is saturated. Furthermore, the fatigue strength grades in the existing fatigue design recommendations were compared with the HSS values.
