刚性转向架曲线通过的蠕滑中心法

Creep Center Method for Bogie Curving

蠕滑中心法运用当代机车车辆动力学的研究成果大大改进了古典的摩擦中心法。该法仍采用一个自由度的计算模型,但采用了锥形踏面,用非线性蠕滑力代替了摩擦力,并考虑了偏载效应。计算结果表明,该法所得的导向力在曲线半径R≤400m 时,与摩擦中心法基本相同。但随着半径加大,该法所得导向力则大为减小,从而使该法可以应用于中、大半径曲线的工况。该法模型简单,计算方便,有利于在工务现场推广应用。

By using modern vchicle dynamics,the Creep Center Method greatly improves the traditional Friction Center Method.This method also adopts a SDOF model,but with the conic wheel tread,instead of the frictional force nonlinear creep force being applied,the axle load eccentric effects also being taken into account.The calcula ted results show:for R≤400m, the guiding forces are almost the same with that by using the Friction Center Method,but with the increasing of curve radius the guiding force decreases rapidly.Hence this method can be extensively applied to not only sharp but also mild curve behavior