Numerical analyses of levitation force and flux creep on high T/sub c/ superconductor

Levitation force between a permanent magnet and a high T/sub c/ superconductor is examined by using two numerical methods. The levitation force to vertical direction is calculated by using the critical state model. Stiffness of restoring force to horizontal direction is calculated by using a frozen-in field model. Numerical solutions agree well with experimental results. Dynamic properties of the levitation force are also analyzed by combining the two methods.<
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