Numerical evaluation of maximum stress of a bulk superconductor in partial magnetization

Stresses in a bulk high-temperature superconductor (HTS) are numerically evaluated in magnetization process by field cooling. Shielding current distributions are obtained through macroscopic numerical simulation using Maxwell equations and critical state model. Stress distributions are obtained through numerical analysis using finite-element method. Differences between 1D and axisymmetric 3D solutions are discussed for the maximum stress distributions. Magnetic field profiles on the HTS are also discussed to estimate the shielding current distribution and maximum stress in partial magnetization.