A Study on Mechanical Properties of Contact Wire for 400km/h-class Electric High-Speed Vehicle

초록

With the more harsh vibration and an increase of average tensil stress, the Cu-Mg alloy contact wire with more excellent mechanical performance was deveolpment for 400km/h-class electric high-speed vehical. Inthis study, a contact wire bending fatigue tester developed by Kang et al. was used to evaluate the fatigue characteristics of the Cu-Mg alloy contact wire to confirm satisfaction for the demand of 400km/h-class electric high-speed system. And test results were also compared with the results of Kang et al.'s research on pure copper. Finally, in oder to eliminate the influence of mean stress, we applied the plastic strain calculated by FE analysis to the relationships b/w plastic strain and fatigue life of pure copper and Cu-Mg alloy contact wires.