Simulation of mechanical stresses in reinforced REBaCuO ring bulks during pulsed-field magnetization
Ainslie, M. D.
Journal of Physics: Conference Series
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Hirano, T., Fujishiro, H., Naito, T., & Ainslie, M. D. (2020). Simulation of mechanical stresses in reinforced REBaCuO ring bulks during pulsed-field magnetization. Journal of Physics: Conference Series, 1559 (1) https://doi.org/10.1088/1742-6596/1559/1/012027
Abstract: We have performed numerical simulations of the electromagnetic, thermal and mechanical properties of a REBaCuO ring-shaped bulk with various reinforcement structures during pulsed-field magnetization (PFM). Compressive and tensile electromagnetic stresses, σ θ mag , are developed in the ring-shaped bulk during the ascending and descending stages of PFM, respectively. These stresses increase at lower operating temperatures and for higher applied pulsed fields. In order to reduce these stresses, the ring-shaped bulk was fully encapsulated by outer and inner ring with upper and lower plates made by Al alloy. In particular, this reinforcement structure can achieve the lowest electromagnetic compressive stress, which corresponds to about 54% of that for a conventional ring reinforcement structure, and the electromagnetic tensile stress was also reduced. We also compared the simulation results of the electromagnetic stresses for the ring-shaped bulk to those for a disk-shaped bulk.
External DOI: https://doi.org/10.1088/1742-6596/1559/1/012027
This record's URL: https://www.repository.cam.ac.uk/handle/1810/306975
Attribution 3.0 Unported (CC BY 3.0)
Licence URL: https://creativecommons.org/licenses/by/3.0/