The Influence of Impulse on the De-Icing Effect of Catenary and the Mechanism of Ice Fracture

Le résumé fourni par la source

Ice accretion on catenary systems poses severe threats to the operational safety of electrified railways in frigid regions. Existing de-icing technologies commonly suffer from low efficiency, high energy consumption, and risks of catenary damage. This study employs LS-DYNA to establish a finite element model of ice-coated catenary, simulating the de-icing process of a single suspension span under impact loading. The effects of impulse parameters on de-icing efficiency and dynamic response characteristics are systematically analyzed. Furthermore, simulations reveal that loading/unloading durations and load amplitude significantly influence ice fracture patterns. Results demonstrate that optimal load profiles balancing de-icing effectiveness, energy utilization efficiency, and structural safety can be identified.

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