Analysis of Mechanical Rigidity Simulates Superconducting Coil Pack at Low Temperature
The helical coil in the Large Helical Device (LHD) is subject to high electromagnetic force above 10 MN/m. The large deformations and high stress fields of the coils cause the instabilities of the superconducting and influence to the plasma confinement due to the deformation of the device. Coils must have enough rigidity to bear this electromagnetic force. To investigate the rigidity of the helical coils, finite element method and mixture law were applied to calculate apparent rigidity of coil pack that simulated the section of actual helical coil. Elastic modulus of insulator were varied in calculation and representative results showed good agreements with the results of the experiments1.
KeywordsCompressive Load Electromagnetic Force Copper Sample Helical Coil Exposure Ratio
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