Research on bearing characteristics of magnetic fluid composite damping device for superconducting maglev trains
To improve the operational quality of superconducting maglev trains,a supercon-ducting magnetic fluid composite damping device is proposed.The structure and working principle of the superconducting magnetic fluid composite damping device are studied,and the performance calculation method and process are provided.The bearing characteristics under different field effects are analyzed.The research shows that the bearing capacity increases with the increase in the number of superconductors,and there is an optimal value for the number of superconductors.In order to obtain high bearing capacity,it is necessary to ensure that the width of the permanent disk is basically equal to the diameter of the superconductor.After the thickness of the permanent disk increases to a specific value,the amplitude of the increase in bearing capacity decreases.The pressure of the liquid nitrogen lubrication film has a maximum value at the center of the su-perconductor,and as the rotational speed increases,the thickness of the liquid nitrogen lubrica-tion film increases and the temperature rise increases.The combined effect of magnetic field and flow field can reduce the pressure and temperature of the liquid nitrogen lubrication film and sig-nificantly increase the bearing capacity of the superconducting magnetic fluid composite vibration damping device with an increase in rotational speed.
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