The regularity of curved railway line conditions on the dynamic response of linear induction motor (LIM) wheel/rail train was investigated to provide theoretical basis for revising design specifications of railway line. Train-line dynamic model of LIM wheel/rail transit system was established

in which the vertical electromagnetic force of an LIM could change with vehicle speed and motor air gap. Effects of vertical electromagnetic force

vehicle speed

curve radius

superelevation

and track irregularity on train dynamic response were simulated and analyzed. Results show that track irregularity and high speed had significant effects on air gap. When the train passed through curved section of small radius

vertical electromagnetic force could remarkably reduce the values of derailment coefficient and wheel load reduction rate. The maximum values of derailment coefficient

wheel load reduction rate

wheel-rail lateral force

vehicle lateral acceleration

and vehicle lateral displacement were significantly affected by vehicle speed

curve radius

and superelevation. The fitting formulas of 5 kinds of maximum dynamic response were proposed

with which the reasonable matching of vehicle speed

curve radius

and superelevation range could be carried out

and the reasonable vehicle limit in curved section could be determined.