The safe-end length effect on welding residual stresses in dissimilar metal welds of surge nozzles

Tae Kwang Song; Chang Young Oh; Ji Soo Kim; Yun Jae Kim; Kyung Soo Lee; Chi Yong Park

doi:10.1016/j.engfracmech.2011.03.007

The safe-end length effect on welding residual stresses in dissimilar metal welds of surge nozzles

Tae Kwang Song, Chang Young Oh, Ji Soo Kim, Yun Jae Kim, Kyung Soo Lee, Chi Yong Park

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

Abstract

The effects of safe-end length and kinematic boundary conditions during welding on weld residual stresses in dissimilar metal welds are systematically investigated using finite element analyses for typical pressurized water reactor surge nozzle configurations. The study is generalized by idealizing complex nozzle geometries as straight pipes with two welds. The impact of these variables on axial residual stresses at inner surface is examined, since these are of most concern for primary water stress corrosion cracking. Possible mechanisms controlling the development of welding residual stresses are used to qualitatively explain the predicted behavior.

Original language	English
Pages (from-to)	1957-1975
Number of pages	19
Journal	Engineering Fracture Mechanics
Volume	78
Issue number	9
DOIs	https://doi.org/10.1016/j.engfracmech.2011.03.007
Publication status	Published - 2011 Jun

Keywords

Finite element welding simulation
Kinematic boundary condition effect
Safe-end length effect
Surge nozzle in pressurized water reactors
Welding residual stresses

ASJC Scopus subject areas

General Materials Science
Mechanics of Materials
Mechanical Engineering

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10.1016/j.engfracmech.2011.03.007

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title = "The safe-end length effect on welding residual stresses in dissimilar metal welds of surge nozzles",

abstract = "The effects of safe-end length and kinematic boundary conditions during welding on weld residual stresses in dissimilar metal welds are systematically investigated using finite element analyses for typical pressurized water reactor surge nozzle configurations. The study is generalized by idealizing complex nozzle geometries as straight pipes with two welds. The impact of these variables on axial residual stresses at inner surface is examined, since these are of most concern for primary water stress corrosion cracking. Possible mechanisms controlling the development of welding residual stresses are used to qualitatively explain the predicted behavior.",

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AU - Kim, Yun Jae

AU - Lee, Kyung Soo

AU - Park, Chi Yong

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AB - The effects of safe-end length and kinematic boundary conditions during welding on weld residual stresses in dissimilar metal welds are systematically investigated using finite element analyses for typical pressurized water reactor surge nozzle configurations. The study is generalized by idealizing complex nozzle geometries as straight pipes with two welds. The impact of these variables on axial residual stresses at inner surface is examined, since these are of most concern for primary water stress corrosion cracking. Possible mechanisms controlling the development of welding residual stresses are used to qualitatively explain the predicted behavior.

KW - Finite element welding simulation

KW - Kinematic boundary condition effect

KW - Safe-end length effect

KW - Surge nozzle in pressurized water reactors

KW - Welding residual stresses

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The safe-end length effect on welding residual stresses in dissimilar metal welds of surge nozzles

Abstract

Keywords

ASJC Scopus subject areas

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