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Numerical simulation and structure selection for rib welding of D-ring patterns in the vacuum chamber module

Based on the finite element analysis software and double ellipsoid heat as the heat source, the ribs welding of D-ring patterns under different ribs in the vacuum chamber module was developed in the 3D dynamic simulation. The transient temperature field distribution, feature points thermal cycling curve and stress-strain curve were obtained. The results showed that the welding temperature field and the feature points thermal cycling curve were consistent. Compared with I-type rib with D-ring structure, the T-type rib had the lower stress-strain and deformation. Thus, it could give priority to the use of T-type rib in the engineering trial process of D-ring patterns of the vacuum chamber module.