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http://dx.doi.org/10.5781/JWJ.2014.32.1.71

Effect of Weld Residual Stress on Fatigue Analysis of Nozzle  

Kim, Sang-Chul (Dept. of Occupational Health & Safety Engineering, Semyung University)
Kim, Man-Won (Central Research Institute, KHNP)
Publication Information
Journal of Welding and Joining / v.32, no.1, 2014 , pp. 71-78 More about this Journal
Abstract
Although the fatigue design curve of ASME Code has enough margin with respect to alternating stress and cycles, the welding residual stress(WRS) should be included in fatigue analysis. In this paper, WRS distribution in a nozzle with dissimilar metal weldment was obtained by finite element analysis and was added in fatigue analysis. The fatigue analysis was performed by following the ASME Code including thermal and stress analysis applying with postulated 30 transient conditions. The calculated results of a cumulative fatigue usage factors(CUF) were compared for the case of the models with or without WRS effects. The results showed that the CUF at weldment and heat affected zone was affected by the WRS.
Keywords
Fatigue analysis; Cumulative usage factor; Dissimilar metal weld; Finite element method; weld residual stress;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
연도 인용수 순위
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