时速350 km双层动车组相关技术参数对车体模态的影响

以某时速350 km、16辆编组的双层动车组为研究对象,考虑车辆平衡对车辆布局进行优化,并对动车组除车体外的其他部件进行轻量化设计。建立车体有限元计算模型,采用控制变量法分析车体相关部位参数变化对车体模态的影响,优化车体结构,确定车辆整备状态下的模态频率。结果表明,通过合理的列车布局方案及编组形式,相比于16辆长编组单层动车组,双层动车组的定员可提高31.8%;通过对动车组其他部件质量进行有效控制,质量降低2.4 t;车辆整备状态下菱形模态振动频率可达10.318 Hz。

Impact of Relevant Technical Parameters of 350 km/h Double-deck EMU on Vehicle Mode

Taking a certain double-deck EMU with 16-vehicle formation and speed of 350 km/h as the research object,the vehicle layout is optimized considering vehicle balance,and the lightweight design of components except vehicle body is carried out.A vehicle body finite element calculation model is established,the influence of parameter changes of vehicle body related parts on the mode is analyzed using control variable method,then the vehicle body structure is optimized and the modal frequency of vehicle in conditioning state is confirmed.Results show that compared with 16-vehicle formation single-deck EMU,reasonable vehicle layout scheme and marshalling form can increase the passenger capacity by 31.8%for double-deck EMU;weight can be reduced by 2.4 t through effective control of the weight of other components;and diamond modal vibration frequency can reach 10.318 Hz when vehicle is in conditioning state.