某型号高速列车M车的振动舒适性分析

研究了如何在高速列车设计阶段预测机车振动舒适特性.首先采用ANSYS建立某型号高速列车M车的有限元模型,在MATLAB中采用频域法对功率谱密度进行处理;然后以轨道水平不平顺为例进行瞬态分析模拟出高速列车在运行时的整车响应,采集地板上某些节点加速度响应数据,进行相关处理后得出了M车对应的舒适度和平稳性指标.这种方法使理论设计阶段进行有效地评价高速列车在不同运行工况下的振动特性和旅客乘坐舒适性成为可能

Vibration/Comfortableness Analysis of Motor Coach of a Certain Model of Express Train in China

How to predict the vibration/comfortableness characteristics of an express train(motor coach train)in China in its design was investigated. With the software ANSYS used to develop a finite element model for a motor coach, the frequency domain method is introduced to deal with the power spectrum density in MATLAB. Then, taking the horizontal irregularity of railroad as an example, a transient analysis is made to simulate the response from the running motor coach train with the acceleration responses collected at some nodes on a coach floor to calculate the degree of comfortableness and the coach' s jolt-proof index. This method makes it possible to evaluate effectively the vibration characteristics and passengers' sitting comfortableness of a motor coach hence the whole train under different running conditions in the conceptual design.