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Finite element analysis for prediction of bead shape of Nd:YAG laser butt welding

Nd:YAG 레이저 맞대기 용접의 비드형상 예측에 관한 유한요소해석

  • 김관우 (충북대학교 정밀기계과) ;
  • 남기정 ((주)한라이비텍) ;
  • 이제훈 (한국기계연구원 정보장비연구센터) ;
  • 서정 (한국기계연구원 정보장비연구센터) ;
  • 조해용 (충북대학교 기계공학부/중전기기 미래기술개발 연구센터)
  • Published : 2008.01.31

Abstract

Nd:YAG pulse laser welding of stainless steel plate was simulated to find welding condition by using commercial finite element code MARC. Due to geometric symmetry, a half model of AISI 304 stainless steel plate was considered and user subroutines were applied to boundary condition for the heat transfer. Material properties such as conductivity, specific heat, mass density and latent heat were given as a function of temperature. As results, Three dimensional heat source model for pulse laser beam conditions of butt welding has been designed by the comparison between the finite element analysis results and experimental data on AISI 304 stainless steel plate. Nd:YAG laser welding for AISI 304 stainless steel was successfully simulated and it should be useful to determine optimal welding condition.

Keywords

References

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  2. 방열 성능 향상을 위한 구리 엔드 탭의 최적형상 연구 vol.41, pp.1, 2008, https://doi.org/10.5916/jkosme.2017.41.1.1