中文摘要：

为研究高速客车转臂式轴箱定位转向架通过曲线时的蠕滑导向性能,基于多体系统动力学及车辆的稳态曲线通过理论,分析曲线上轮对的受力特点,采用动力学软件SIMPACK计算转向架高速通过曲线轨道时的导向蠕滑力,研究转臂结构参数对转向架运动状态和轮轨蠕滑力的影响。计算结果表明,转向架以欠超高状态通过曲线时,随着转臂长度和相对于轨面倾角的增加,转臂回转导致前轮对正向摇头角明显增大,产生更大的轮轨横向蠕滑力,使轮对向曲线内侧偏移,轮对横移量逐渐由负值变为正值;后轮对正的摇头角则不断减小,横向蠕滑力随之下降,受前轮对影响,后轮对向曲线内侧移动;转臂长度超过0.2m后,转臂长度及倾角均会对转向架曲线通过性能产生明显的影响。

英文摘要：

To investigate the creep steering performance of rotating-arm bogie for high-speed passenger car, the mechanical characteristics of wheelsets were analyzed firstly based on the multibody system dynamics and steady state curving theory of railway vehicles. The steering creep forces were analyzed when the bogie with ro- tating arm negotiated a curved track at high speed with cant deficiency. The influence of rotating-arm structur- al parameters on the motions and forces of bogie was investigated by SIMPACK. The calculation shows as fol- lows： The rotation of the rotating-arm affects the bogie motions greatly; with the increase of the rotating-arm length and inclination, the positive yaw angle of the front wheelset is increased and a greater lateral creep force is created at the contact point; the front wheelset moves inwards on the curve reducing the chance of contact between the outside wheel flange and rail head and the lateral shift changes gradually from negative to positive; however, the positive yaw angle of the back wheelset is decreased gradually and the lateral creep force reduces; due to the influence of the front wheelset and lateral suspension force, the back wheelset also moves inwards; the longitudinal creep moments of wheelsets change with the converse trends of wheelset lateral displacements; when the length of the rotating-arm is below 0.2 meter, the rotating-arm length is the primary factor affecting the curve negotiation performance and its inclination is the secondary factor; if its length is above 0.2 meter, both of the two structural parameters have significant influence.