Anticipation of welding deformation with finite element method is a very interested topic in the industries, adequate heat source model is essential for concluding reasonable results. This study is related to estimate the parameters of Goldak heat source model, and global optimization algorithm is applied to this research. The heat affected zone (HAZ) boundary line of bead on plate (BOP) welding is used as the target, parameters of heat sources are used as the variables. Adaptive simulated annealing is applied and the optimal result is obtained out of 1,000 candidates. The convergence of finite element method and the global optimization is meaningful for estimation of welding deformation, which could enhance to reduce the resources and time for experiments.

ABSTRACT
1. 서 론
2. Adaptive Simulated Annealing
3. 실험에 의한 열원파라미터 측정
    3.1 실험 장비
    3.2 실험 환경
    3.3 열영향부 위치측정
4. 유한요소법을 통한 열원 파라미터 도출
    4.1 유한요소모델
    4.2 설계 목표 및 변수 설정
    4.3 최적 알고리즘 설정
5. 결과 및 논의
6. 결 론
References

• 표창민(Korea Institute of Industrial Technology, Researcher) | Chang-Min Pyo Corresponding Author