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Chaotic Motions in Dynamic High-Tc Superconducting Levitation System with Thermal Effects
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Chaotic Motions in Dynamic High-Tc Superconducting Levitation System with Thermal Effects
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Journal Article
Chaotic Motions in Dynamic High-Tc Superconducting Levitation System with Thermal Effects
2020
Overview
The chaotic motions were shown by the vibrations of a bulk permanent magnet (PM) supported by a cylindrical high-Tc superconductor (HTSC) under external disturbance in very early experiments. There are few theoretical studies on the nonlinear behaviors of the HTSC levitation system as the complex interaction between the HTSC and PM. In this paper, we developed a numerical program to analyze the nonlinear vibrations of the levitated PM coupled with the electromagnetic force, taking into account the heat diffusion on HTSC. When the levitation system displayed chaotic oscillations by vertical excitation, the electromagnetic and thermal characteristics of the HTSC will change. The dynamic responses are shown by comparing the calculation results in which the thermal effects are taken into account and not. The numerical results display the displacements of PM, magnetic levitation forces, the acceleration, and the maximum Lyapunov exponent. The results show that the thermal effect will influence the stability of the levitation system.
Publisher
Springer US,Springer Nature B.V
Subject
