直交交差部における疲労精査に関する一考察

概要

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A large number of cruciform joints can be found in ship structures, but it is generally known that it is not clear how FEM stress output ought to be used and how FEM input ought to be prepared for fatigue strength estimation of welded structures with cruciform joints. In this study, a consideration was made on FEM modeling, and eventually it is made clear that the shell (plate) element FEM may overestimate the stress concentration factor at the cruciform joints applied bending moment. And it is found that the hot spot stress by FEM can be used in order to assess the fatigue strength of cruciform joints on the basis of its practicality. As the result of these studies, the practical evaluation method of stresses around cruciform joints is established.
社団法人日本船舶海洋工学会の論文
2002-09-25