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从数值方面详细分析了轨道结构变形对高速机车单轮对牵引力矩的影响。首先利用有限元方法分析计算轮对和轨道结构变形和相应作用力之关系 ,确定了轮轨接触斑处单位密度作用力引起轮轨变形的影响系数。用这些影响系数修正 Kalker非赫兹滚动接触理论中由 Bossinesq和 Cerruti公式确定的力和位移的影响系数。并分别用 Kalker三维弹性体非赫兹滚动接触理论和其被修正形式分析计算了高速机车单轮对牵引力矩。从数值结果看 ,轮对和轨道的结构变形对机车牵引力矩的影响是十分大的
The effect of track structure deformation on the traction torque of high-speed locomotive single wheels is analyzed in detail from numerical aspects. Firstly, the relationship between wheelset and track structure deformation and corresponding force was analyzed by finite element method, and the influence coefficient of wheel-rail deformation caused by unit density of wheel-rail contact spot was determined. These coefficients of influence are used to correct for the influence coefficients of forces and displacements determined by the Bossinesq and Cerruti formulas in Kalker’s non-Hertz rolling contact theory. The single-wheel traction torque of high-speed locomotives was calculated and analyzed by using Kalker three-dimensional non-Hertz rolling contact theory and its modified form respectively. From the numerical results, the effect of structural deformation of the wheelset and the track on locomotive traction torque is very large