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为分析弹簧托板的形式对摆动式转向架货车动力学性能的影响,利用有限单元法将弹簧托板等效为一根弹性梁,根据Hook定律得到弹簧托板与摇动台的连接刚度,通过改变弹簧托板的半径,得到不同半径下弹簧托板与摇动座的连接刚度。运用多体系统动力学原理,考虑车辆各个部件的连接和接触关系,建立整个车辆的多体系统动力学模型,通过对比不同弹簧托板半径下车辆的各主要动力学性能指标,得到较为合适的弹簧托板半径。综合对比不同弹簧托板半径下的车辆动力学分析结果得出,随着弹簧托板半径的增大,车辆的临界速度减小,车体横向平稳性增加,而车辆的运行稳定性指标出现波动,当弹簧托板半径为10m时,车辆的各主要动力学性能较好,其对车辆的动力学性能影响较小。
In order to analyze the influence of the spring pallet on the dynamic performance of the wagon truck with swinging bogie, the spring pallet is equivalent to an elastic beam by the finite element method. The connection stiffness between the spring pallete and the shaking table is obtained according to Hook’s law. Change the radius of the spring pallet to obtain the connection stiffness of the spring pallet and the swing base under different radii. By using the principle of multi-body system dynamics and considering the connection and contact relationship of the various components of the vehicle, a multi-body system dynamics model of the entire vehicle is established. By comparing the main dynamic performance indexes of vehicles under different spring pallet radius, Spring pallet radius. Comparing the vehicle dynamics analysis results under different radius of the spring pallet, the critical velocity of the vehicle decreases with the increase of the radius of the spring pallet, and the lateral stability of the vehicle increases, while the running stability index of the vehicle fluctuates When the radius of the spring plate is 10m, the main dynamic performance of the vehicle is better, which has less impact on the dynamic performance of the vehicle.