Finite element analysis and measurement for residual stress of dissimilar metal weld in pressurizer safety nozzle mockup

被引：0
|
作者：
Kyoung-soo Lee
W. Kim
Jeong-geun Lee
Chi-yong Park
Jun-seok Yang
Tae-ryong Kim
Jai-hak Park
机构：
[1] Korea Electric Power Research Institute,Nuclear Power Generation Laboratory
[2] Chungbuk University,Safety Engineering Department
来源：
Journal of Mechanical Science and Technology | 2009年 / 23卷
关键词：
Block removal and splitting layer method (BRSL); Dissimilar metal weld (DMW); Finite element analysis (FEA); Hole drilling method (HDM); Weld residual stress (WRS);
D O I：
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中图分类号：
学科分类号：
摘要：
Finite element (FE) analysis and experiment for weld residual stress (WRS) in the pressurizer safety nozzle mockup is described in various processes and results. Foremost of which is the dissimilar simulation metal welding (DMW) between carbon steel and austenitic stainless steel. Thermal and structural analyses were compared with actual residual stress, and actual measurements of. Magnitude and distribution of WRS in the nozzle mockup were assessed. Two measurement methods were used: hole-drilling method (HDM) with strain gauge for residual stress on the surface of the mockup, and block removal and splitting layer (BRSL) method for through-thickness. FE analysis and measurement data showed good agreement. In conclusion, the characteristics of weld residual stress of DMW could be well understood and the simplified FE analysis was verified as acceptable for estimating WRS.
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页码：2948 / 2955
页数：7
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