基于轮径差函数的曲线钢轨打磨廓形设计

Curved rail grinding profile design based on RRD function

摘要:

为改善打磨质量，提高打磨后车辆运行品质，提出了一种基于直接反推方法的铁路钢轨打磨廓形的设计方法，该方法以优化打磨后的轮径差函数为核心目标，以预期的轮轨接触分布为设计边界条件，实现了通过设计轮径差函数直接反推钢轨打磨廓形的算法设计，并经编制的算法程序校验了该方法的可行性。该方法既可针对两股钢轨同时设计，也可针对单股钢轨进行设计，同时能够通过调整设计轮径差和预期接触分布满足不同的打磨需求。

Abstract:

To improve grinding quality and enhance vehicle dynamic performance, this paper presents an inverse design method for determination of rail grinding profiles. This method aims at optimizing rolling radii difference after grinding. It uses designed wheel-rail contact distribution as boundary conditions. With the designed rolling radii difference and contact distribution, a numerical algorithm is deduced to find the grinding profiles. Computer simulation results prove the validity of the proposed algorithm. This method not only can solve both sides design problem, but also can solve single side design problem. By designing different rolling radii difference and contact distribution, it could satisfy different grinding requirements.