Design analysis of the hinge support for the ITER vacuum vessel

In order to verify design feasibility and structural integrity of a hinge type support for the ITER VV support system, the design analysis has been performed in detail, which includes heat transfer, elastic stress and limit analyses. The structural analyses were performed to confirm the transfer of forces through the supporting structure and to determine the maximum allowable loads according to the RCC-MR. From the heat transfer analysis for VV baking stage, total heat flow into the support was obtained to confirm the thermal heat flux into the cryostat under baking condition. In addition, the design modification was also discussed to enhance the structural performance of the supporting system.