CAJ | 학술논문

建立了整备状态车体有限元模型及包含车体弹性的高速列车车辆刚柔耦合动力学模型，分析了车下设备吊挂方式对车体整备状态模态参数的影响，提出车下设备隔振橡胶件参数设计方法，并研究了整备状态下车体与车下设备悬挂模态参数的匹配关系。结果表明，车下设备采用弹性吊挂时，车体整备状态下的模态频率显著提升；合理设置车下设备隔振悬挂参数可有效降低车体弹性振动，算例中，当橡胶件的静挠度设置为8！9 mm时，设备浮沉频率可与车体垂向一阶弯曲频率避开，侧滚频率可与车体菱形变形模态频率避开，有源设备高频振动减振效果理想，车辆可以获得优良的运行平稳性，同时车下设备自身振动亦不剧烈。
건립료정비상태차체유한원모형급포함차체탄성적고속열차차량강유우합동역학모형，분석료차하설비조괘방식대차체정비상태모태삼수적영향，제출차하설비격진상효건삼수설계방법，병연구료정비상태하차체여차하설비현괘모태삼수적필배관계。결과표명，차하설비채용탄성조괘시，차체정비상태하적모태빈솔현저제승；합리설치차하설비격진현괘삼수가유효강저차체탄성진동，산례중，당상효건적정뇨도설치위8！9 mm시，설비부침빈솔가여차체수향일계만곡빈솔피개，측곤빈솔가여차체릉형변형모태빈솔피개，유원설비고빈진동감진효과이상，차량가이획득우량적운행평은성，동시차하설비자신진동역불극렬。
FE models of fully-equipped car bodies and a high-speed railway vehicle rigid-flexible coupled model including the flexibility of car body were built,the influences of suspended forms of devices on modal parameters of fully-equipped car bodies were analyzed,the design procedures of rubber isolator parameters of suspended devices were proposed,and the matching relations between car body modes and suspended equipment modal parameters were investigated.The results showed that car body modal frequencies can be promoted obviously with devices of elastic suspension;reasonable suspension parameters of devices can effectively suppress car body flexible vibration.The examples here showed that when the static deflection of a rubber isolator is 8 !9 mm,the bounce and roll frequencies of the device can be far from the first vertical bending and the diagonal distortion frequencies of the car body,respectively;the devices having vibration sources can achieve a good effect of vibration reduction in a high frequency range,the vehicle can obtain a good ride quality and the suspended device vibration is not strong.