Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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A Study on the Simulation of Welding Deformation for accurate Assembling

고정밀도 조립을 위한 용접 변형의 해석에 관한 연구

  • Sung, Ki-Chan (Dept.of Mechanical Engineering, Graduate School of Busan National University) ;
  • Jang, Kyung-Bok (Mechanical Technology Research Center, Busan National University) ;
  • Jung, Jin-Woo (Dept.of Precision Mechanical Engineering, Graduate School of Busan National University) ;
  • Kang, Sung-Soo (Mechanical Technology Research Center, Busan National University)
  • 성기찬 (부산대학교 기계공학과 대학원) ;
  • 장경복 (부산대학교 기계기술연구소) ;
  • 정진우 (부산대학교 정밀기계공학과 대학원) ;
  • 강성수 (부산대학교 기계기술연구소)
  • Published : 2001.04.01
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Abstract

It is essential to predict the welding deformation at assembly stage, to increase productivity through mechanization and automation effectively. A practical analysis method appled for production engineering was proposed to simulate the deformation of arc welding, with an analytical model using finite element method solving thermal-elastic-plastic behavior. In this research, for accurate assembling, 3-D thermal-elastic-plastic finite element model is used to simulate the out-of-plane deformation caused by arc welding. Efforts have been made to find out the efficient method to improve the reliability and accuracy of the numerical calculation. Each of theories of small and large deformation is applied in solving 3-D thermal-elastic-plastic problem to compare with their efficiency about calculation imes and solution accuracy. When solid elements are used in a bending problem of a plate, phenomenon that the predictive deformation is more than that of actual survey is observed. To prevent this phenomenon, reduced integration method for element is employed instead of full integration that is generally used in 3-D thermal-elastic-plastic analysis.

Keywords

References

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