Progress in the large assembly design of JT-60SA by CAD techniques

Kawashima, Hisato; Kubo, Hirotaka; Arai, Takashi; Masaki, Kei; Yagyu, Junichi; Hasegawa, Koichi; Shibanuma, Kiyoshi

The design study of JT-60SA has been carried out efficiently using the CAD system. Main components such as the vacuum vessel (VV) were distinguished for 24 items and CAD designers began with the design of parts and assembly on every item. Basic design is almost completed except the manufactured apparatuses such as VV. All components are being integrated as the large-assembly to study the interference and accessibility among those components. This large-assembly model consists of 10,000 parts and 4 GB volume at present, corresponding the largest scale structure in this field. Special difficulties are produced as that the existing computer (PC) cannot cover enough and CAD data of each component must be managed unified. Therefore, it is carried out to optimize the PC, to reduce the volume using the favorable function of CAD, and to introduce the data management system. Thus, handling of JT-60SA large-assembly model, which becomes a large scale more, is in progress.