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A study of the influence of electron beam welding sequences on the ITER vacuum vessel prototype VATS |
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| Authors: | J Guirao E RodríguezA Bayón JL CortizoL Jones |
| Affiliation: | a Numerical Technologies, S. L., Marqués de San Esteban No. 52, 33206 Gijón, Spain b Department of Mechanical Engineering, University of Oviedo, Campus de Viesques, 33203 Gijón, Spain c Vacuum Vessel Group, Fusion for Energy, Josep Pla 2, 08019 Barcelona, Spain |
| Abstract: | This paper presents a detailed finite element simulation of the welds of the prototype Vessel Advanced Technology Segment (VATS) by electron-beam welding. The flexible support housings are reinforcing cylinders of the pressure boundary of the ITER vacuum vessel. They connect inner and outer shells. Eight different simulation sequences were carried out to explain the different mechanisms that drive the distortion process during welding and to lead to an optimum sequence which minimizes the final distortions. The simulations were used to guide the manufacture of the final sequence of the VATS. |
| Keywords: | Weld distortions E-beam welding Finite element ITER |
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