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Use of a new methodology for prediction of weld distortion and residual stresses using FE simulation applied to ITER vacuum vessel manufacture |
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| Authors: | J. Guirao,E. Rodrí guez,L. Jones |
| Affiliation: | a Numerical Analysis Technologies, S.L., Marqués de San Esteban No. 9, 33206 Gijón, Spain b Department of Mechanical Engineering, University of Oviedo, Campus de Gijón, 33203 Gijón, Spain c Nuclear Generation Division, Iberdrola Engineering, Av. Manoteras 20, 28050 Madrid, Spain d Vacuum Vessel Group, Fusion for Energy, Josep Pla, 2, 08019 Barcelona, Spain |
| Abstract: | The ITER VV Sectors have to be manufactured to extremely tight tolerances, without the production of a prototype to establish the welding distortions. It is thus necessary to develop a (computationally) successful methodology for modelling weld process in order to predict welding distortion and residual stresses. Further, in order to optimise the manufacture sequence and method, the model should be able to rapidly assess the effect of using different sequences. Once the optimal sequence has been decided, then the method has also to be able to accurately predict the final shape. |
| Keywords: | Weld distortions Residual stresses Finite element ITER |
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