Burst pressure estimation of Alloy 690 axial cracked steam generator U-bend tubes using finite element damage analysis

Ji Seok Kim; Yun Jae Kim; Myeong Woo Lee; Jun Young Jeon; Jong Sung Kim

doi:10.1016/j.net.2020.07.024

Burst pressure estimation of Alloy 690 axial cracked steam generator U-bend tubes using finite element damage analysis

Ji Seok Kim, Yun Jae Kim, Myeong Woo Lee, Jun Young Jeon, Jong Sung Kim

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

6 Citations (Scopus)

Abstract

This paper presents numerical estimation of burst pressures of axial cracked U-bend tubes, considering the U-bending process analysis. The validity of the FE simulations is confirmed by comparing with published experimental data. From parametric analyses, it is shown that existing EPRI burst pressure estimation equations for straight tubes can be conservatively used to estimate burst pressures of the U-bend tubes. This is due to the increase in yield strength during the U-bending process. The degree of conservatism would decrease with increasing the bend radius and with increasing the crack depth.

Original language	English
Pages (from-to)	666-676
Number of pages	11
Journal	Nuclear Engineering and Technology
Volume	53
Issue number	2
DOIs	https://doi.org/10.1016/j.net.2020.07.024
Publication status	Published - 2021 Feb

Bibliographical note

Funding Information:
This study was supported by Korea Institute of Energy Technology Evaluation and Planning (KETEP) (No. 20171520101650).

Publisher Copyright:
© 2020

Keywords

Alloy 690 steam generator U-bend tube
Burst pressure
Finite element damage analysis
Strain hardening due to the U-bending process

ASJC Scopus subject areas

Nuclear Energy and Engineering

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10.1016/j.net.2020.07.024

Cite this

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title = "Burst pressure estimation of Alloy 690 axial cracked steam generator U-bend tubes using finite element damage analysis",

abstract = "This paper presents numerical estimation of burst pressures of axial cracked U-bend tubes, considering the U-bending process analysis. The validity of the FE simulations is confirmed by comparing with published experimental data. From parametric analyses, it is shown that existing EPRI burst pressure estimation equations for straight tubes can be conservatively used to estimate burst pressures of the U-bend tubes. This is due to the increase in yield strength during the U-bending process. The degree of conservatism would decrease with increasing the bend radius and with increasing the crack depth.",

keywords = "Alloy 690 steam generator U-bend tube, Burst pressure, Finite element damage analysis, Strain hardening due to the U-bending process",

author = "Kim, {Ji Seok} and Kim, {Yun Jae} and Lee, {Myeong Woo} and Jeon, {Jun Young} and Kim, {Jong Sung}",

note = "Funding Information: This study was supported by Korea Institute of Energy Technology Evaluation and Planning (KETEP) (No. 20171520101650). Publisher Copyright: {\textcopyright} 2020",

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AU - Kim, Ji Seok

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AU - Lee, Myeong Woo

AU - Jeon, Jun Young

AU - Kim, Jong Sung

PY - 2021/2

Y1 - 2021/2

N2 - This paper presents numerical estimation of burst pressures of axial cracked U-bend tubes, considering the U-bending process analysis. The validity of the FE simulations is confirmed by comparing with published experimental data. From parametric analyses, it is shown that existing EPRI burst pressure estimation equations for straight tubes can be conservatively used to estimate burst pressures of the U-bend tubes. This is due to the increase in yield strength during the U-bending process. The degree of conservatism would decrease with increasing the bend radius and with increasing the crack depth.

AB - This paper presents numerical estimation of burst pressures of axial cracked U-bend tubes, considering the U-bending process analysis. The validity of the FE simulations is confirmed by comparing with published experimental data. From parametric analyses, it is shown that existing EPRI burst pressure estimation equations for straight tubes can be conservatively used to estimate burst pressures of the U-bend tubes. This is due to the increase in yield strength during the U-bending process. The degree of conservatism would decrease with increasing the bend radius and with increasing the crack depth.

KW - Alloy 690 steam generator U-bend tube

KW - Burst pressure

KW - Finite element damage analysis

KW - Strain hardening due to the U-bending process

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SP - 666

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JO - Nuclear Engineering and Technology

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ER -

Burst pressure estimation of Alloy 690 axial cracked steam generator U-bend tubes using finite element damage analysis

Abstract

Bibliographical note

Keywords

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