THE INFLUENCE OF RAILWAY VEHICLE/TRACK INTERACTION ON THE FATIGUE LIFE OF THE TRACK

摘要

Trains running on the track will create the track vibration which affects the fatigue life of the track.This paper studies the effect of railway vehicle/track interaction to the fatigue life of the track.The train model adopts the car bodies and bogie frames which considers the actual situation of the train.Timoshenko beam is used to simulate the track.The dynamic response is analyzed by considering the track irregularity.The material S-N curve and the Miner linear damage theory are combined to calculate the rail fatigue life.This article adopts various train running speeds,aiming at studying their effects on the rail fatigue life.The proposed method has a realistic significance to increase the track's useful life and to offer a new view to study the track damage.