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Under transient operating conditions, especially in the case of alternating current or pulse current, the high temperature superconducting (HTS) magnet will suffer ac losses leading to changes in the temperature and critical current distribution throughout the magnet. A magneto-thermal model is needed to simulate this process. In fact, the state change of the magnet will lead to a nonlinear performance...
A new FEM is given in which the planar continuum is replaced by the planar frame. Firstly the planar continuum is subdivided into the planar rectangular element with 5 nodes and 15 degrees of freedom, and then the rectangular element is transformed into the cross-frame element, thus replacing the planar continuum by the planar frame. Nodal force in the cross-frame element under loading is calculated...
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