NUMERICAL-ANALYSIS OF MAGNETOELASTIC BUCKLING OF FUSION-REACTOR COMPONENTS

This paper describes a numerical analysis of the buckling of fusion re actor components, resulting from electromagnetic loads. An analysis me thod for the calculation of the dynamic electromagnetically coupled bu ckling is proposed, where the geometrical non-linearity, the magnetic damping and the magnetic stiffness effects are taken into consideratio n. In the cases of the analysis of a shallow arch, the numerical resul ts agreed well with the experimental results. The comparison showed th at the inclusion of the geometrical non-linearity and the magnetic sti ffness in the analysis is evidently necessary for good agreement. The analysis of the ITER vacuum vessel showed that, in the case of plasma disruption, the possibility of electromagnetic buckling of the ITER ve ssel is very small under the conceptual design activity condition.