대한기계학회:학술대회논문집 (Proceedings of the KSME Conference)
- 대한기계학회 2008년도 추계학술대회A
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- Pages.98-103
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- 2008
유한요소법을 이용한 용접공정 모사 시 입열 방법에 따른 용접잔류응력의 영향
Weld Residual Stress According to the Ways of Heat Input in the Simulation of Weld Process using Finite Element Analysis
- 발행 : 2008.11.05
초록
This paper is to discuss distribution of welding residual stresses of a ferritic low alloy steel nozzle with dissimilar metal weld using Alloy 82/182. Two dimensional (2D) thermo-mechanical finite element analyses are carried out to simulate multi-pass welding process on the basis of the detailed and fabrication data. On performing the welding analysis generally, the characteristics on the heat input and heat transfer of weld are affected on the weld residual stress analyses. Thermal analyses in the welding heat cycle process is very important process in weld residual stress analyses. Therefore, heat is rapidly input to the weld pass material, using internal volumetric heat generation, at a rate which raises the peak weld metal temperature to