【摘要】 转向架构架作为轮轨激励能量传递至车体过程中的重要一环，采取合适的阻尼措施抑制其高频振动具有重要意义。基于颗粒阻尼对某高速列车转向架构架进行振动抑制效果研究，结合线路测试数据和有限元方法，确定转向架构架重点关注频段以及颗粒阻尼结构安装位置。建立颗粒阻尼结构的离散元模型，计算不同设计方案下颗粒阻尼的能量耗散，并分析耗能产生机理，对比能量耗散大小得到最优的颗粒阻尼设计参数。结合稳态能量流法利用能量耗散、运动速度、质量等信息计算颗粒阻尼的等效阻尼系数，通过构架有限元模型对其减振效果进行验证。有限元分析结果表明，添加颗粒阻尼结构情况下，构架转臂轴箱安装座上方，加速度响应均有所降低，效果明显。更多还原

【Abstract】 The bogie frame is an important part of the process of transferring wheel-rail excitation energy to the vehicle body. It is crucial to implement appropriate damping measures for suppressing high-frequency vibrations in the bogie frame. This study investigates the vibration suppression effectiveness of a high-speed train bogie frame based on particle damping. The frequency range and optimal installation position of the particle damping structure is determined by combining line test data with finite element analysis. A discrete element model is established to evaluate energy dissipation under different design schemes, analyze the underlying mechanism, and obtain optimal parameters for particle damping based on comparative energy dissipation analysis. The steady state energy flow method is employed to calculate the equivalent damping coefficient of particle damping using information on energy dissipation, velocity, and mass. This effect is further validated through finite element modeling of the frame. Finite element analysis results demonstrate a significant reduction in acceleration response at axle box seat of the rotor upon addition of a particle damping structure.更多还原