机车车辆二系垂向阻尼对其振动传递特性的影响
Analysis of the Secondary Vertical Damper’s Influence to the Vehicle Vibration Transmission Characteristics
摘要:
转向架的悬挂系统对车辆的振动衰减起着重要的作用。为了机车车辆二系阻尼对振动传递特性的影响,本文首先将车辆系统简化为两自由度受迫振动的线性简化模型,并建立动力学微分方程,对两自由度车辆振动模态进行分析。最后基于Simpack多体动力学软件,建立了动车组的非线性多体动力学仿真模型,分析了不同二系垂向阻尼对车体振动幅值的衰减情况。
Abstract:
The suspension system of the bogie plays an important role in attenuating vibration. To analyze the vertical damper’s influence to vibration transmission, a tow-DOF forced vibration linear model simplifying from the vehicle system has been built to get the dynamics differential equation to analyze the modal of the tow-DOF vehicle vibration model. A nonlinear multi-body dynamic model has been established based on the SIMPACK, to analyze the various damper’s influence to the vibration attenuation of the car-body amplitude.
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