A novel superconducting magnetic levitation transportation systems has been proposed at University of L’Aquila, Italy. The bogie floats due to a passive, self-balancing interaction between high temperature superconducting skaters on board and permanent magnets on the track, in all phases of motion, zero speed included. A scaled superconducting skater has been statically tested measuring the repulsive-attractive magnetic forces varying, in a controlled way, the distance between the skater and the track. A non linear hysteretic characteristic curve has been identified averaging a set of suitable measures. In a first step, considering the thinness of the hysteretic cycles, the characteristic curve has been simplified in a non linearly elastic one. On the same time the equivalent tangent stiffness of such a curve has been identified, knowing the geometry and the mass characteristics of the bogie, by an experimental modal analysis conducted in operational conditions. A companion numerical model of the system has been introduced to forecast the working conditions with particular attention to dynamic behavior.
CITATION STYLE
Alaggio, R., Benedettini, F., D’Innocenzo, F., D’Ovidio, G., Sebastiani, D., & Zulli, D. (2015). Modal identification of superconducting magnetic levitating bogie. In Conference Proceedings of the Society for Experimental Mechanics Series (Vol. 2, pp. 227–236). Springer New York LLC. https://doi.org/10.1007/978-3-319-15248-6_24
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