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http://dx.doi.org/10.3744/SNAK.2002.39.1.049

Three Dimensional Thermal-Elastic Plastic Analysis of GMAW Considering the Melting of Weld Bead  

Jang-Hyun Lee (서울대학교 공학연구소)
Jong-Gye Shin (서울대학교 조선해양공학과 해양시스템공학연구소)
Ji-Hoon Kim (한국 IBM PLM 사업본부)
Publication Information
Journal of the Society of Naval Architects of Korea / v.39, no.1, 2002 , pp. 49-60 More about this Journal
Abstract
Welding is essential in ship production since welding is very popular method for joining two or more metals. However, welding causes residual stress and distortion and these give a bad influence to the structure strength and assembly of ship blocks. Therefore, prediction and treatment of residual stress and distortion is a key to accuracy control in shipyard. In this paper, a computational procedure, based on thermal-elastic-plastic 3-dimensional FEA, has been suggested to simulate butt and fillet welding process. In the simulation process, temperature distribution at each time step is obtained by heat transfer analysis and then thermal deformation analysis is done with obtained temperature distributions to find the residual stress and distortion. In heat transfer analysis, enthalpy method is used to realize phase change at melting temperature. Also element birth and death method is used to simulate adding of weld metal in both heat transfer analysis and thermal elastic plastic analysis. The proposed procedure is verified by related researches and the results show good agreement with those of related researches.
Keywords
Welding; Residual stress; Thermal elastic plastic analysis; weld bead;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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