Parametric study for Welding Residual Stresses in Nozzle of Nuclear Power Plants using Finite Element Method

유한요소법을 사용한 원전 노즐 용접잔류응력의 변수해석

Distribution of welding residual stresses are mainly characterized by degrees and frequencies of thermal loads applied to materials. However, other effects as component size and clamping condition can also affect stress distributions to a certain extent thus careful manipulation of these parameters based on clear understanding of how they affect residual stresses distributions and why can be additional measure to mitigate residual stresses. This paper discusses aforementioned issues for the case of safety and relief nozzle in nuclear power plant through finite element analysis.