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Welding strain analysis of friction stir-welded aluminum alloy structures using inherent strain-based equivalent loads

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Abstract

Friction stir welding is a solid-state welding method commonly used for aluminum alloy or lightweight metal. It has the advantages of low welding strain, high welding quality, and low residual welding stress while requiring no protection gas. Welding strain analysis of friction stir welding using finite element analysis has been the subject of many studies that focused on the substance fluid using threedimensional computational fluid dynamics; however, this approach is inefficient for large structures and requires much time for analysis. To address this drawback, this study proposes a faster method for analyzing extruded aluminum material that exploits the advantages of the inherent strain-based equivalent load.

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Authors and Affiliations

  1. Korea Railroad Research Institute, Uiwang-City, Gyeonggi-do, 437-757, Korea

    Hyung-Suk Mun & Sung-Il Seo

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  1. Hyung-Suk Mun
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  2. Sung-Il Seo
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Correspondence to Hyung-Suk Mun.

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Recommended by Associate Editor Youngseong Lee

Hyung Suk Mun, Ph.D. received a doctor degree in Department of Naval Architecture at Seoul National University, Seoul Korea in 2008 and he completed a master of science degree in Department of Mechanical Engineering at The George Washington University, Washington D.C U.S.A, in 1994. He is a passionate researcher of welding analysis and heat stress. He published many research paper on prediction of welding deformation as well as involved in national research projects which were related structural analysis, finite element analysis for critical joints, rolling contact fatigue analysis, dynamic analysis and design of steering system, elasto-plastic finite element analysis, development manufacturing system and maintenance system based on RAMS.

Sung Il Seo, Ph.D., ia s chief resear cher of Korea Railroad Research Institute. Dr. Seo was born at Seoul, Korea in 1962. He graduated from Department of Naval Architecture, Seoul National University in 1984 and received a doctor degree fromthe same university in 1994. He entered Hanjin Heavy Industries Co. in 1986 and was engaged in structural design of ship and development of aluminum rolling stocks. He transferred to KRRI in 2002. He was engaged in development of Korea High Speed Train. He has been in charge of the development project for Korea Tilting Train. He published many research papers on high speed train, structural design and welding deformations in international journals.

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Mun, HS., Seo, SI. Welding strain analysis of friction stir-welded aluminum alloy structures using inherent strain-based equivalent loads. J Mech Sci Technol 27, 2775–2782 (2013). https://doi.org/10.1007/s12206-013-0724-4

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  • DOI: https://doi.org/10.1007/s12206-013-0724-4

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