Abstract
Based on vehicle dynamics and finite element analysis of rail dynamics, the wheel-rail relation acts as the connection, while rolling stock is considered as a whole system. With the help of computer simulation and the general finite element dynamics analyzing software ANYSYS/LS-DYNA, a vehicle-ballastless track- foundation coupling model is built, which is used to analyze the impact of driving comfort of ballastless track in different rail pads. This result will be compared with the on-site experimental data and get a conclusion of optimizing the related performance of ordinary rail pad to take place of filled in rail pad and insure the vehicle stability and comfort. Currently, lots of new technologies, construction technologies and equipment are applied to Passenger Dedicated Railway, and high technical content, high standard fastening system are gradually promoted, however, there is no systematic study of impact on driving comfort of fastening system at static and dynamic conditions Being the significant part of fastening system, the rail pad directly affects the vehicle comfort and safety. Different kinds of rail pads affect differently on driving comfort. Based on the vehicle dynamics and finite element analysis of rail dynamics,the wheel/rail relation acts as the connection, while rolling stock is considered as a whole system. With the help of computer simulation and the general finite element dynamics software ANYSYS/LS-DYNA, a vehicle-ballastless track-foundation is built, which is used to have a dynamic simulation on track's dynamic performance, when the fastening system uses different rail pads, the ordinary and the filled in rail pad, whose results will be compared with the on-site experimental data, and have a study on the feasibility of the replacement of the filled in rail pad after optimizing the related performance of ordinary one, providing a theoretical basis for a reduce of the maintenance of track.
Published Version
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