Static and Dynamic Analysis of Conductor Rail with Large Cross-Sectional Moment of Inertia in Rigid Catenary Systems

The rigid catenary system is widely used in tunnels to power electric trains via contact with a pantograph. Due gravity, the wire normally has sag that may affect dynamic interaction performance To reduce sag, most efficient measure improve moment of inertia conductor rail, which clamp wire. Six new types rail large moments are developed based on conventional rail. Then both static and analyses conducted investigate big inertia. rail’s 3D solid finite element model built using approach. vertical deflection stress distribution comparatively analyzed among different analysis results indicate maximum significantly reduced when best observed case 1 used. by 28.37%, decreased 27.76% compared conductor. Finally, pantograph included evaluate force fluctuation after rails presented. shows performance, can standard deviation 32% 27% at speeds 160 km/h 200 km/h.