Dynamic Performance Evaluation of a Low-vacuum Tube Maglev Line from Changsha to Hengyang
Low temperature superconducting vacuum tube maglev is one of the ultra-high-speed transportation methods that a lot of countries are competing to develop.At present,the research is in its infancy,and it is necessary to evaluate the dynamic performance of its route lines.In this paper,taking the maglev test line from Changsha to Hengyang as an example,a vehicle-route coupling model of the low-temperature superconducting electric levitation system was established,the dynamic performances of the maglev vehicle were determined.Firstly,the vertical and lateral acceleration of the carbody,levitation and guidance force were calculated.Secondly,the frequency histograms of the dynamic performance indicators were drawn,and the distributions of these indicators in different intervals was analyzed.Thirdly,the influence of the different curve radius on the dynamic performance index was obtained.The research shows that when the maglev vehicle travels across the Changsha-Hengyang line,the calculated vertical and lateral accelerations of the carbody are lower than the comfort threshold,and the dynamic performance meets the requirements.From the perspective of vehicle dynamic performance,the transition curve length of 1400 m is reasonable.When the curve radius is 20000 m,the vehicle speed 1000 km/h and the cross slope of 16° match the best dynamic performances.The results in the article can provide references for the design of ultra high speed maglev lines.
ultra-high speed maglev systemlow temperature superconductingvacuum tubedynamicsroute design
万方数据
维普
