원문정보
초록
영어
Laser welding is used in various industries due to fast welding speed, and prediction with FEM is needed to design. The multi-layered heat source model that can cover various models has been recently proposed to analyze laser welding, but it takes a lot of time because more than 2,000 cases are compared to derive the results. In order to reduce the time, the simplified model should be suggested. In order to derive a simplified model, laser welding heat transfer analysis was performed using the welding direction length and the convection coefficient of the welding direction surface as parameters. As a result, the model whose difference is less than 0.1% compared to reference model is deducted. The analysis time was reduced by about 90% from 48 hours to 5 hours. Also difference of convection coefficient on the welding direction surface does not affect the temperature distribution much.
목차
1. 서론
2. 유한요소해석
2.1 소프트웨어
2.2 유한요소해석 구성 및 경계 조건
2.3 물리적 특성
2.4 레이저 용접 열원 모델
3. 결과
4. 논의
5. 결론
References