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采用ANSYS和SIMPACK多体动力学软件建立了高速车辆三维刚柔耦合动力学模型,研究了车下设备采用弹性悬吊方式时不同悬吊刚度对车体振动的影响。仿真结果表明,合理的悬吊刚度能够有效降低车体的弹性振动,尤其是对振动能量贡献最大的1阶弯曲振动减振效果明显。同时,结合滚动振动试验台试验数据,将多种刚度的试验结果与仿真结果进行了对比,二者能够有效地吻合,从而验证了理论模型的正确性,为仿真计算奠定了基础。文中的研究成果能为工程应用提供合理的参考。
The three-dimensional rigid-flexible coupling dynamics model of high-speed vehicle was established by ANSYS and SIMPACK multi-body dynamics software. The influence of different suspension stiffness on vehicle body vibration when the under-vehicle equipment adopts elastic suspension mode was studied. The simulation results show that a reasonable suspension stiffness can effectively reduce the elastic vibration of the vehicle body, especially the vibration damping effect of the first-order bending vibration that contributes most to the vibration energy. At the same time, combined with the test data of the rolling vibration test rig, the test results of a variety of stiffness are compared with the simulation results, and the two can be effectively fitted, which verifies the correctness of the theoretical model and lays the foundation for the simulation calculation. The research results in this paper can provide a reasonable reference for engineering application.