接触网弹性吊索参数对弓网动态性能影响

为确定不同速度等级接触网弹性吊索参数的优选值,利用有限单元法,建立了中国高速铁路250、350 km/h两种速度等级的受电弓、接触网和弓网接触的动力学仿真模型,得到受电弓与接触网的动态性能指标,比较双弓作用下不同接触网弹性吊索截面积、张力和长度的弓网接触力数字特征和接触网定位点最大抬升.研究结果表明:适应250 km/...

Influence of Catenary Stitch Wire Parameters on Dynamic Performance Between Pantograph and Catenary

In order to determine the optimal design values of the catenary stitch wire at different speed levels, the dynamic simulation models of pantograph, catenary and pantograph-catenary contact have been established by finite element method, which correspond to the speed levels of 250 and 350 km/h for Chinese high-speed railways. The dynamic performance indexes of pantograph and catenary, such as the section area, statistics of contact force and the maximum uplift at supporting points have been obtained and compared, with different cross-sectional areas, tensions and length of the stitch wire under double pantographs. The results show that for the parameters of the stitch wire on O2-1 catenary, JTMH 35 mm2 cross-section, (2.80 ± 0.10) kN tension and 14 m or 18 m length at 250 km/h should be chosen; for the parameters of stitch wire on Beijing?Shanghai high-speed catenary, JTMH 35 mm2 cross-section, (3.50 ± 0.10) kN tension and 18m length at 350 km/h. The change of stitch wire parameters has little influence on the contact force of the anterior pantograph, but has a significant effect on that of the posterior pantograph. The maximum uplift at supporting points with the stitch wire length of 22 m is 111% at 250 km/h and 117% at 350 km/h of the stitch wire length of 18 m, which means that the change of stitch wire length has a significant impact on the maximum uplift.