Stiffness analysis of new spacer grid model for metal 3D additive manufacturing

Yong Hwi Kim; Jooyoung Ryu; Chaeyoung Nam; Jaeboong Choi; Moon Ki Kim

doi:10.1007/s12206-021-1227-3

Stiffness analysis of new spacer grid model for metal 3D additive manufacturing

Yong Hwi Kim, Jooyoung Ryu, Chaeyoung Nam, Jaeboong Choi, Moon Ki Kim

Department of Mechanical Engineering

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

Abstract

Currently, the Republic of Korea operates a total of 28 nuclear power plants, including those under construction. Although every part of a nuclear power plant is important for safe operation, most attention is paid to the nuclear fuel assembly. The assembly is divided into fuel rods containing fuel assembly fuel and spacer grids. The spacer grid is an important component for core cooling by keeping the fuel rods protected and spaced apart. The spacer grid is produced from a strap bar, which is the base plate, and by spot welding eight edges of the strap bar. However, the spot welding machine has a large capacity and power supply such that the welding quality varies depending on the weld metal and surface conditions. As a result, the welding point may be defective. Therefore, this study aims to analytically verify the performance of a newly designed spacer grid for metal 3D AM as well as present analytical criteria for product development.

Original language	English
Pages (from-to)	297-303
Number of pages	7
Journal	Journal of Mechanical Science and Technology
Volume	36
Issue number	1
DOIs	https://doi.org/10.1007/s12206-021-1227-3
State	Published - Jan 2022

Keywords

Buckling analysis
FEM
Metal 3D printing
Spacer grid of fuel assembly
Stiffness

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1007/s12206-021-1227-3

Cite this

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title = "Stiffness analysis of new spacer grid model for metal 3D additive manufacturing",

abstract = "Currently, the Republic of Korea operates a total of 28 nuclear power plants, including those under construction. Although every part of a nuclear power plant is important for safe operation, most attention is paid to the nuclear fuel assembly. The assembly is divided into fuel rods containing fuel assembly fuel and spacer grids. The spacer grid is an important component for core cooling by keeping the fuel rods protected and spaced apart. The spacer grid is produced from a strap bar, which is the base plate, and by spot welding eight edges of the strap bar. However, the spot welding machine has a large capacity and power supply such that the welding quality varies depending on the weld metal and surface conditions. As a result, the welding point may be defective. Therefore, this study aims to analytically verify the performance of a newly designed spacer grid for metal 3D AM as well as present analytical criteria for product development.",

keywords = "Buckling analysis, FEM, Metal 3D printing, Spacer grid of fuel assembly, Stiffness",

author = "Kim, \{Yong Hwi\} and Jooyoung Ryu and Chaeyoung Nam and Jaeboong Choi and Kim, \{Moon Ki\}",

note = "Publisher Copyright: {\textcopyright} 2022, The Korean Society of Mechanical Engineers and Springer-Verlag GmbH Germany, part of Springer Nature.",

year = "2022",

month = jan,

doi = "10.1007/s12206-021-1227-3",

language = "English",

volume = "36",

pages = "297--303",

journal = "Journal of Mechanical Science and Technology",

issn = "1738-494X",

publisher = "Korean Society of Mechanical Engineers",

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TY - JOUR

T1 - Stiffness analysis of new spacer grid model for metal 3D additive manufacturing

AU - Kim, Yong Hwi

AU - Ryu, Jooyoung

AU - Nam, Chaeyoung

AU - Choi, Jaeboong

AU - Kim, Moon Ki

PY - 2022/1

Y1 - 2022/1

N2 - Currently, the Republic of Korea operates a total of 28 nuclear power plants, including those under construction. Although every part of a nuclear power plant is important for safe operation, most attention is paid to the nuclear fuel assembly. The assembly is divided into fuel rods containing fuel assembly fuel and spacer grids. The spacer grid is an important component for core cooling by keeping the fuel rods protected and spaced apart. The spacer grid is produced from a strap bar, which is the base plate, and by spot welding eight edges of the strap bar. However, the spot welding machine has a large capacity and power supply such that the welding quality varies depending on the weld metal and surface conditions. As a result, the welding point may be defective. Therefore, this study aims to analytically verify the performance of a newly designed spacer grid for metal 3D AM as well as present analytical criteria for product development.

AB - Currently, the Republic of Korea operates a total of 28 nuclear power plants, including those under construction. Although every part of a nuclear power plant is important for safe operation, most attention is paid to the nuclear fuel assembly. The assembly is divided into fuel rods containing fuel assembly fuel and spacer grids. The spacer grid is an important component for core cooling by keeping the fuel rods protected and spaced apart. The spacer grid is produced from a strap bar, which is the base plate, and by spot welding eight edges of the strap bar. However, the spot welding machine has a large capacity and power supply such that the welding quality varies depending on the weld metal and surface conditions. As a result, the welding point may be defective. Therefore, this study aims to analytically verify the performance of a newly designed spacer grid for metal 3D AM as well as present analytical criteria for product development.

KW - Buckling analysis

KW - FEM

KW - Metal 3D printing

KW - Spacer grid of fuel assembly

KW - Stiffness

UR - https://www.scopus.com/pages/publications/85122693914

U2 - 10.1007/s12206-021-1227-3

DO - 10.1007/s12206-021-1227-3

M3 - Article

AN - SCOPUS:85122693914

SN - 1738-494X

VL - 36

SP - 297

EP - 303

JO - Journal of Mechanical Science and Technology

JF - Journal of Mechanical Science and Technology

IS - 1

ER -

Stiffness analysis of new spacer grid model for metal 3D additive manufacturing

Abstract

Keywords

UN SDGs

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