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Instability analysis of first wall components of a tokamak reactor subjected to electromagnetic transients

A.G. Youtsos, M. Biggio, Y. Crutzen, F. Farfaletti-Casali1990年Fusion Engineering and DesignIF 1.7出版社

AbstractThe First Wall structure of a tokamak-type thermonuclear fusion reactor, such as NET (Next European Torus) or ITER (International Thermonuclear Experimental Reactor), should be able to withstand the combined effects of normal operating condition loads as well as significant electromagnetic transients induced during a plasma disruption event. Thus, stability analysis of such structures under large dynamic loads is essential for their adequate design.The stability analyses performed are based on incremental static analysis (RIKS method) on an imperfect structural geometry which is determined on the basis of the shape of the lowest buckling eigenvector obtained by a linearized buckling (EULER) analysis. Non linear behaviour due to large rotations and material behaviour, including strain-rate effects, were introduced in the incremental analysis.

日本語訳

トカマク型熱核融合炉(NET(次期欧州トーラス)やITER(国際熱核融合実験炉)など)の第一壁構造は、通常運転時の荷重と、プラズマ崩壊事象中に誘起される大きな電磁過渡現象の複合的な影響に耐えうるものでなければならない。したがって、このような構造物の大きな動的荷重下での安定性解析は、その適切な設計にとって不可欠である。実施された安定性解析は、線形座屈(EULER)解析によって得られる最低次の座屈固有ベクトルの形状に基づいて決定される初期不整を有する構造形状に対する、増分静的解析(RIKS法)に基づいている。大回転による非線形挙動と、ひずみ速度効果を含む材料挙動が、増分解析に導入された。

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iter中精度(概要文一致)

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