不同弹性扣件下钢轨振动仿真分析

建立一般弹性扣件、粘结板式弹性扣件和轨道减振器扣件下的轨道模型,用有限元法模拟分析列车移动荷载作用下,不同扣件刚度、不同行车速度时钢轨的振动和荷载的传递情况。计算结果表明,随着行车速度提高,钢轨振动加剧,扣件支反力增大;随着扣件刚度减小,钢轨振动增加,扣件支反力减小,冲击荷载传递减小。

Rail Vibration Simulation Analysis with Different Elastic Fastener

Establishing a track model under conditions of track with common elastic fasteners, bond plate type fasteners and rail damper plate, using finite element method, rail vibration and loads transfer at different train running speeds and different fastener stiffness under dynamics of train moving loads are simulated and analyzed. The result shows that with increase of train speed, rail vibration is intensified, fastener support reaction force increases. With fastener stiffness decreases, rail vibration increases, fastener support reaction force decreases, and the impact of load transfer is reduced.