The Simulation Research On The Creep Properties Of The High-Speed Wheel-Rail System Laboratory

In this paper research on the wheel-rail creep properties of test and simulation, based on the 1:1 full size high-speed wheel-rail system laboratory in domestic. In this paper, the main work includes:(1)This paper introduces the main function, basic structure and technical performance of the high- speed wheel- rail system laboratory, established by C hina academy of railway sciences.(2)This paper introduces the classical wheel/ rail contact model theory and several kinds of wheel/ rail contact algorithm of SIMPACK software, which is combined with the characteristics of railway vehicle.(3)This paper set up a dynamic simulation model of the high- speed wheel- rail system laboratory. The heart of the model is the load of guide frame and the round-round contact form.(4)Through the laboratory model, this paper analysis of creep properties about the different wheel/ rail contact algorithm; This paper analysis of creep properties about the different roller rig diameter, to analysis the differences creep characteristic between the wheel/ wheel contact and the wheel/ rail contact; This paper analysis of creep properties about the different between the grinding tread profile- S1002 CN in Beijing-Shanghai railway and its prototypical tread profile- S1002 CN, To study the creep characteristic on the wheel wear.The simulation results show that the Linear algorithm does not apply to large spin cases; When roller rig using 3 m diameter and transverse input in-5 ~ 5 mm, Calculation accuracy of creep force control between 2% ~ 6%; When Transverse input in-6 ~ 6 mm, the equivalent taper is bigger of Tread wear.(5) The simulation model are verified by creep test and simulation curve experiment of the high-speed wheel-rail System laboratory.The results show that the longitudinal creep force error less than 15% of the test rig simulation model in creep test conditions; Wheel/rail vertical, horizontal force of the simulation model is high degree consistency with the exper iment in simulation curve experiment test conditions.