Hao LI, Huanyun DAI, Qunsheng WANG, et al. Research on Influence of Equivalent Conicity on Lateral Stability of 120 km/h Metro Vehicles[J]. Electric Drive for Locomotives, 2020,(3):68-72.
Hao LI, Huanyun DAI, Qunsheng WANG, et al. Research on Influence of Equivalent Conicity on Lateral Stability of 120 km/h Metro Vehicles[J]. Electric Drive for Locomotives, 2020,(3):68-72. DOI: 10.13890/j.issn.1000-128x.2020.03.014.
基于目前120 km/h B型地铁车辆在实际运营中出现车轮等效锥度较大的情况,借助Simpack动力学仿真软件,建立车辆多体动力学模型,还原了目前车辆在实际运营中车轮磨耗后出现的异常振动。仿真发现,车辆在车轮等效锥度为0.5时,车体存在因转向架蛇行造成的5.5 Hz振动频率和因车体上心滚摆模态被轨道不平顺激发造成的2.5 Hz振动频率,因此造成车体横向平稳性指标过大。通过对悬挂参数分析发现,适当增大一系横向定位刚度可有效降低车轮等效锥度较大时的车辆横向平稳性指标。
Abstract
Based on the fact that 120 km/h B-type metro vehicles had a large wheel equivalent conicity in actual operation, a multi-body dynamic model of the vehicle was established with Simpack dynamic simulation software, which could restore the abnormal vibration after wheel wear in actual operation. Simulation results showed that when the equivalent conicity of the vehicle was 0.5, the vehicle body had 5.5 Hz vibration frequency caused by bogie hunting and 2.5 Hz vibration frequency caused by the track irregularity excitation of the upper center roll mode of the vehicle body, which resulted into large lateral stability index of the vehicle body. Through the analysis of suspension parameters, it was found that increasing the primary lateral positioning stiffness properly could effectively reduce the vehicle lateral stability index when the equivalent conicity was larger.
关键词
地铁车辆等效锥度横向稳定性悬挂参数仿真轨道不平顺
Keywords
metro vehiclesequivalent conicitylateral stabilitysuspension parameterssimulationtrack irregularity
POLACH O. Comparability of the non-linear and linearized stability assessment during railway vehicle design[J]. Vehicle System Dynamics, 2006, 44(Suppl 1): 129-138.
DIEDRICHS B, BERG M, STICHEL S, et al. Vehicle dynamics of a high-speed passenger car due to aerodynamics inside tunnels[J]. Proceedings of the Institution of Mechanical Engineers, Part F:Journal of Rail and Rapid Transit, 2007, 221(4): 527-545.
Technical specification for interoperability relating to the 'rolling stock' sub-system of the trans-european high-speed rail system: TSI L84—2008[S].