中文摘要：

提出一种非对称径向转向架方案，分析了非对称径向转向架的受力特性和导向原理。使用Simpack建立相同参数的对称径向转向架、非对称径向转向架以及常规转向架动力学模型，分析了非对称径向转向架通过左、右曲线的动力学性能、三种转向架的曲线粘着利用率以及牵引力对三种转向架曲线通过性能的影响。仿真结果表明：非对称径向转向架在通过左、右曲线时具有很好的对称性；非对称径向转向架和对称径向转向架在干燥和湿滑的曲线轨道上运行时具有基本一致的黏着利用率，而在R700m以下的小半径干燥曲线轨道上，两种径向转向架的粘着利用率高于常规转向架；随着曲线半径的增大，两种径向转向架的第一轮对摇头角和后轴轮轴横向力显著小于常规转向架；对于运行在不同的曲线半径下，两种径向转向架的脱轨系数和整车磨耗功率都优于常规转向架，由此可以得出，非对称径向转向架具有和对称径向转向架一样优于常规转向架的曲线通过性能。

英文摘要：

A new scheme for asymmetrical radial bogies is proposed. Mechanical properties and steering principles of the asymmetrical radial bogies are analyzed. Dynamics models of symmetrical bogies, asymmetrical radial bogies and normal bogies are built respectively by means of Simpack. Curve negotiating performance of the asymmetrical radial bogie when the train passing through left and right curves is analyzed respectively. The utilization ratios of adhesion on curves of the three bogie models are calculated. And the influence of the traction forces of the three models on curve negotiating performance is investigated. The results indicate that the asymmetrical radial bogie has a good symmetry of performance when negotiating both left and right curves. Both symmetrical and asymmetrical radial bogies have essentially the same utilization ratio of adhesion when running on the dry and slippery curved tracks. However, on dry curved tracks with the radius less than 700 m , both adhesion utilization ratios of the two radial bogies are greater than the one of the normal bogie.With the increase of the curve radius, the yaw angle of the first wheelsets of the two radial bogies and the lateral force of the rear wheelsets are smaller than the one of the normal bogie. Derailment coefficient and wear power of whole vehicle with normal bogie are greater than the one with the two radial bogies when running on the curved track with various radii. It can be concluded that the asymmetrical radial bogie possesses the same good dynamics performance as the symmetrical radial bogie, and is better than the normal bogie.