Influence of Random Track Irregularity on Turnout Passing Performance of Sewage Suction Vehicles
In order to study the dynamic performance of sewage suction vehicles passing No.9 single-opening turnout in lateral and reverse directions,Abaqus and Simpack were used to establish a dynamics model considering the flexibility of wheelsets and turnout with variable cross-section.This model was compared to the all-rigid-body dynamics model.An analysis was conducted on the dynamics performance of sewage suction vehicles passing No.9 single-opening turnout in lateral and reverse directions,as well as the influence of the track's random irregularity on their performance in negotiating the turnout.The results indicate that the car can pass the No.9 single-opening turnout in lateral and reverse directions under limited speed,but the wheel-rail impact is larger in the crossing area and the dynamics performance is poor.When compared with the all-rigid-body dynamics model,the vertical and lateral vibration acceleration of wheelset in position 1 and the wheel-rail vertical force are larger when considering the wheelset flexibility.Additionally,the random track irregularity has a larger impact on the wheel-rail vibration.When using the U.S.level 4 track irregularity spectrum as an excitation,the turnout negotiation performance of sewage suction vehicles is significantly diminished,and the wheel-rail wear index spectrum experiences a significant increase of 71.33%in comparison to the German high interference spectrum.
万方数据
维普
