| 车下弹性吊挂设备悬挂刚度选取方法 |
| |
| 引用本文： | 朱涛,雷成,肖守讷,于金朋.车下弹性吊挂设备悬挂刚度选取方法[J].交通运输工程学报,2018,18(5):111-118. |
| |
| 作者姓名： | 朱涛 雷成 肖守讷 于金朋 |
| |
| 作者单位： | 1.西南交通大学牵引动力国家重点实验室,四川 成都 6100312.郑州铁路职业技术学院机车车辆学院, 河南 郑州 4514603.中车唐山机车车辆有限公司产品技术研究中心,河北 唐山 063035 |
| |
| 基金项目： | 国家重点基础研究发展计划2016YFB1200602-14 |
| |
| 摘 要： | 以车体低阶弹性振动、刚体振动和设备有源振动为输入, 提出了一种能够快速、简便确定弹性设备悬挂刚度的方法;在充分考虑吊挂设备各个方向上可能出现耦合振动、设备安装间隙、允许最大振动位移等因素的前提下, 推导了任意悬挂方式吊挂设备的刚体振动频率计算公式;给出了车下弹性吊挂设备悬挂刚度的选取方法与分析流程;以某动车组为例, 建立了车体与动力包的耦合振动分析模型, 计算得到了动力包的点头、摇头、浮沉、侧滚等刚体振动频率和三向悬挂刚度的取值范围, 并对比了动力包悬挂刚度理论计算结果与有限元结果。研究结果表明:在已知车体或吊挂设备基本参数的前提下, 采用提出的方法无需通过复杂的动力学建模分析即可计算出其点头、摇头、浮沉、侧滚等刚体振动频率, 与有限元计算结果相比, 刚体振动频率的最大相对误差为6.88%;计算所得动力包刚体振动频率与车体对应振动频率的比值均有效避开了耦合区间0.750, 1.414], 因此, 采用提出的方法可快速、准确地确定吊挂设备的刚度范围, 从而避免设备与车体之间的共振。
|
| 关 键 词： | 车辆工程 车下设备 弹性吊挂 隔振 共振 理论分析 刚度选取方法 |
| 收稿时间： | 2018-04-22 |
Suspension stiffness selecting method of elastic suspension equipment under vehicle |
| |
| ZHU Tao,LEI Cheng,XIAO Shou-ne,YU Jin-peng.Suspension stiffness selecting method of elastic suspension equipment under vehicle[J].Journal of Traffic and Transportation Engineering,2018,18(5):111-118. |
| |
| Authors: | ZHU Tao LEI Cheng XIAO Shou-ne YU Jin-peng |
| |
| Affiliation: | 1.State Key Laboratory of Traction Power,Southwest Jiaotong University, Chengdu 610031, Sichuan, China2.School of Rolling Stock,Zhengzhou Railway Vocational and Technical College, Zhengzhou 451460, Henan, China3.Product Technology Research Center,CRRC Tangshan Co.,Ltd., Tangshan 063035, Hebei, China |
| |
| Abstract: | Taking the low-order elastic vibration, the rigid body vibration and the equipment active vibration of carbody as inputs, a method for rapidly and simply determining the suspension stiffness of elastic equipment was proposed.Under the premise of fully considering the coupling vibration that may occur in all directions, equipment installation clearance, the maximum allowable vibration displacement of suspension equipment and other factors, the formula for calculating the rigid body vibration frequency of suspended equipment with arbitrary suspension method was derived.The selection method and analysis process of suspension stiffness of elastic suspension equipment under vehicle were given.Taking a certain electric multiple unit (EMU) as an example, the coupled vibration analysis model of carbody and power pack was established.The ranges of rigid body vibration frequencies of nodding, shaking, floating and sinking, lateralrolling, and three-dimensional suspension stiffnesses of power pack were calculated, and the theoretical calculation results of suspension stiffness of power pack were compared with corresponding finite element results.Research result shows that under the premise that the basic parameters of carbody or suspension equipment are known, the proposed method can calculate the rigid body vibration frequencies of nodding, shaking, floating and sinking, and lateral rolling, without complicated dynamic modeling and analysis. Comparing with the finite element calculation result, the maximum relative error in rigid body vibration frequency is 6.88%.All the calculated frequency ratios between rigid body vibration frequencies of power pack and corresponding vibration frequencies of carbody can effectively avoid the coupling interval0.750, 1.414].Therefore, the stiffness of elastic suspension equipment under vehicle calculated by the proposed method can quickly and accurately determine the stiffness rang of suspension equipment, so as to avoid the resonance between equipment and carbody. |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《交通运输工程学报》浏览原始摘要信息 |
|
点击此处可从《交通运输工程学报》下载全文 |
|
