基于虚拟样机技术的动力稳定车新型稳定装置研究

摘要

运用虚拟样机技术，结合刚柔耦合多体动力学，针对稳定车稳定装置开发新型的激振结构，利用 ADAMS软件建立了新型稳定装置的虚拟样机，根据现行稳定车工作参数标准在其有效工作范围内各取三组激振频率和垂直静压力对装置工作进行仿真，并从激振频率与激振力两方面对新结构的动力学响应进行分析，并与列车真实运行情况和现行机构工作参数进行了对比评价，总结了不同激振频率和垂直静压力对新型稳定车稳定装置的激振力的影响。同时针对新结构的工作特点，提取了关键部件的实时仿真载荷谱，运用扩展有限元法对其进行有限元分析，仿真结果与后期进行的样机试验一致，其虚拟仿真结果的可信性为进一步开发改进提供了有效的动力学参数依据。%Virtual prototype technology combined with the rigid-flexible coupled multi-body dynamics was applied in this study for a newly developed stabilizing device of a dynamic track stabilizer.The virtual prototype for the new stabilizing device was modeled using ADAMS software.3 sets of exciting frequencies and vertical static pressures in its effective working range were introduced in the device's simulation.The dynamic responses of the new device were analyzed from both exciting frequency and exciting force aspects,and they were compared with working parameters of the current stabilizing device and the situation of the real vehicle operation.The effects of exciting frequency and vertical static pressure on the exciting force of the new device were studied.Aiming at the working features of the new device,the simulated realtime load spectrum of key parts was extracted,the new device was analyzed with the extended FE method. The simulation results agreed well with those of the physical prototype tests.The simulation results of the virtual prototype for the new device provided a reference for further improving the new stabilizing device.