Study on the Dynamic Performance of Curve Negotiation of Tramcar with Independent Wheelsets Using Elastic Wheels
In this article,the dynamic simulation software SIMPACK and the discrete rigidity damping elements are used to simulate the elastic deformation characteristics of elastic wheels in order to form a dynamic model of a modern tramcar composed of 3 cars;a comparative analysis is conducted on the anti-vibration performance of elastic wheels in the time and frequency domains under the track condition with a curve radius R400 m,and the impact of elastic wheels in different wheelset forms under different track conditions with curve radius of 50～400 m on the curve negotiation performance of intermediate trailers.The calculation result shows that elastic wheels can reduce the vertical vibration of carbody in the frequency ranges of 20～40 Hz,50～70 Hz and 180～300 Hz as well as the lateral vibration of carbody in the frequency range of 20～550 Hz.From the perspectives of wheelset lateral displacement and wheel load reduction rate,the curve radius R200 m approximately is the demarcation point between the curve guidance ability of the conventional wheelset with elastic wheels and that of the independent wheelset with elastic wheels.From the perspectives of wheel-rail lateral creepage,wheelset yawing angle,derailment coefficient and wheelset lateral force,the curve radius R100 m approximately is the demarcation point.
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万方数据
维普
