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中文摘要：
建立了车辆/轨道横向垂向耦合动力学、轮轨滚动接触力学和钢轨材料摩擦磨损模型为一体的钢轨波浪形磨损计算模型,发展了相应的数值方法.利用该方法分析曲线钢轨接触面上具有不同固定波长的初始波磨随着车辆通过次数增加的演化规律.计算同一个转向架的4个车轮反复作用下初始波磨波深、频率和相位的变化情况.数值结果表明,随着车辆通过次数增加,具有任何固定波长的钢轨初始波磨逐渐衰减,且同一个转向架前轮对作用下初始波磨衰减的速度远大于后轮对作用下初始波磨衰减的速度;前轮对作用下的演化波磨的相位有移动的趋势;轮对反复作用下单一波长的初始波磨逐渐演化具有两个波长的新的波磨;初始波磨的波长越短,在车辆通过次数增加时,衰减得越快.
英文摘要：
A model of rail ward. The model considers corrugation calculation is put fora combination of a Non-Hertzian rolling contact theory of wheel/rail system, rail material wear model and a coupling dynamics of rail vehicle/track in the vertical and lateral directions. A corresponding numerical method is developed to analyze evolution of the initial rail corrugation with different wavelength with an increase of passenger car passage. When the 4 wheels of a same bogie roll over the rails with the same initial corrugation, the wave-depth, passing frequencies and phases of the initial corrugation in development are calculated. The numerical results obtained indicate that： ① The wave-depth of the initial corrugation with aft fixing wavelength decreases with an increase of the passenger car passage, the initial corrugation passed by the leading wheelset decays much more than that passed by the trailing wheelset.② The evolution of the initial corrugations has a tendency to move forward. ③ After the leading wheelset rolls over the rails with the initial corrugation with a fixing wavelength repeatedly the initial corrugation gradually changes. The new corrugation gradually forms and presents two wavelengths.④ Under the condition of the passenger car passage increase, the smaller the wavelength of the initial corrugation is, and the faster the wave-depth of the initial corrugation attenuates.
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