CAJ | 학술논문

为了分析轮轨系统在轨道不平顺功率谱激励下的动力响应,根据动力学原理并结合有限元理论,建立了轮轨接触的有限元模型,对轮轨系统进行静力分析和频谱分析,获得轮轨接触的基本特性和轮轨系统不同部位位移和加速度响应的谱值,计算结果表明,车体竖向位移最大谱值对应的频率为1.669Hz,而其最大加速度谱值所对应的频率为105.25Hz；车轴和车轮底面最大竖向位移和加速度谱值所对应的频率分别为66.27Hz和66.28Hz；同时结果显示,位移和加速度响应谱值随着列车运行速度的增加也是逐渐变大的。
위료분석륜궤계통재궤도불평순공솔보격려하적동력향응,근거동역학원리병결합유한원이론,건립료륜궤접촉적유한원모형,대륜궤계통진행정력분석화빈보분석,획득륜궤접촉적기본특성화륜궤계통불동부위위이화가속도향응적보치,계산결과표명,차체수향위이최대보치대응적빈솔위1.669Hz,이기최대가속도보치소대응적빈솔위105.25Hz；차축화차륜저면최대수향위이화가속도보치소대응적빈솔분별위66.27Hz화66.28Hz；동시결과현시,위이화가속도향응보치수착열차운행속도적증가야시축점변대적。
In order to analyze the dynamic responses of wheel/rail system under the condition of track irregularity, the finite element model of wheel/rail system is established based on the dynamic principle and finite element method, static and modal/spectrum analyses of wheel/rail system are carried, and basic contact characteristics of wheel/rail, displacement and acceleration response spectrum values of wheel/rail system in different parts are obtained. The results show that the maximum vertical displacement spectrum values of train body correspond to the frequency of 1. 669 Hz, while the maximum acceleration spectrum values of train body correspond to the frequency of 105. 25 Hz. The maximum vertical displacement and acceleration spectrum values of axle and bottom wheel correspond to the frequency of 66. 27 Hz and 66. 28 Hz respectively. At the same time the results also indicate that displacement and acceleration response spectrum values increase with the increase of train speed.