西南交通大学学报（社会科学版）
西南交通大學學報（社會科學版）
서남교통대학학보（사회과학판）
JOURNAL OF SOUTHWEST JIAOTONG UNIVERSITY(SOCIAL SCIENCES)
2014年
4期
693-699
,共7页
动车组%弹性车体%车下设备%耦合振动
動車組%彈性車體%車下設備%耦閤振動
동차조%탄성차체%차하설비%우합진동
EMU%flexible carbody%equipment%coupled vibration
为研究车体和车下设备之间的耦合振动关系，建立了高速动车组的车辆刚柔耦合系统动力学模型；考虑车体弹性模态振动，采用扫频激励法，仿真分析设备质量、刚度、阻尼和安装位置对系统振动的影响；研究了不同参数相互作用下的振动特性．研究结果表明：与设备采用固接方式相比，弹性联接可显著降低车体弹性振动，设备质量越大且越靠近车体中部安装，对抑制弹性振动效用越显著；设备质量小于1．0 t或者距离车体中心6 m以上时，降低弹性振动的效果较小，阻尼比为5％～30％时，效果较好．利用机车车辆滚动振动试验台进行设备悬挂振动特性测试，表明设备采用弹性联接可显著改善高速动车组的乘坐平稳性，运行速度等级越高，效果越显著，最大可改善约15％．
為研究車體和車下設備之間的耦閤振動關繫，建立瞭高速動車組的車輛剛柔耦閤繫統動力學模型；攷慮車體彈性模態振動，採用掃頻激勵法，倣真分析設備質量、剛度、阻尼和安裝位置對繫統振動的影響；研究瞭不同參數相互作用下的振動特性．研究結果錶明：與設備採用固接方式相比，彈性聯接可顯著降低車體彈性振動，設備質量越大且越靠近車體中部安裝，對抑製彈性振動效用越顯著；設備質量小于1．0 t或者距離車體中心6 m以上時，降低彈性振動的效果較小，阻尼比為5％～30％時，效果較好．利用機車車輛滾動振動試驗檯進行設備懸掛振動特性測試，錶明設備採用彈性聯接可顯著改善高速動車組的乘坐平穩性，運行速度等級越高，效果越顯著，最大可改善約15％．
위연구차체화차하설비지간적우합진동관계，건립료고속동차조적차량강유우합계통동역학모형；고필차체탄성모태진동，채용소빈격려법，방진분석설비질량、강도、조니화안장위치대계통진동적영향；연구료불동삼수상호작용하적진동특성．연구결과표명：여설비채용고접방식상비，탄성련접가현저강저차체탄성진동，설비질량월대차월고근차체중부안장，대억제탄성진동효용월현저；설비질량소우1．0 t혹자거리차체중심6 m이상시，강저탄성진동적효과교소，조니비위5％～30％시，효과교호．이용궤차차량곤동진동시험태진행설비현괘진동특성측시，표명설비채용탄성련접가현저개선고속동차조적승좌평은성，운행속도등급월고，효과월현저，최대가개선약15％．
To study the coupled vibration between a flexible car body and its suspended equipment,a rigid-flexible coupling dynamic model of high-speed electric multiple units (EMUs )was established taking into account the flexible modes of the car body. The swept frequency excitation method was used to analyze the influence of suspension parameters on the system vibration,such as the equipment mass, suspension frequency,damping,and mounting position. Then,the vibration characteristics of the system were studied under the interplay between various parameters. The results show that the flexible vibration could be reduced significantly by the elastic suspension of equipment compared to the rigid suspension case. The system showed a good vibration absorber performance if the heavy equipment was suspended elastically close to the car body center,while it had a little effect on the flexible vibration reduction if the equipment mass was lower than 1. 0 t or more than 6 m apart away from the center. Furthermore,the damping ratio of the elastic suspension should remain in a certain range from 5% to 30%. In addition,a laboratory test was conducted on a vehicle rolling and vibration test rig. The test results show a good agreement with the simulation ones:the elastic suspension can improve the riding comfort obviously,and the effect increases with the running speed increasing,with a maximum reduction of about 15% at a certain speed.
