2000 Volume 7 Issue 26 Pages 27-34
A hot spot stress (HSS) concept is expected to be widely used in a fatigue assessment of welded steel structures. In order to establish a HSSdefinition and fatigue design procedure, finite element analyses were conducted on a plate model with a welded gusset. Then, various HSS calculation methods were examined. As a result, it was revealed that existing calculation methods such as two-point method and one-point method bring relatively large errors hen plate thickness becomes large. Considering the width of local stress oncentration, a new two-point method has been proposed in this paper. Furthermore, the fatigue strength grades in the existing fatigue design recommendations were compared with the HSS values.
