汽车仪表板及转向管柱模态分析  

Modal analysis of vehicle instrument panel and steering column

作　　者：温立志[1] 吴文江[2] 杜彦良 

机构地区：[1]北京交通大学机械与电子控制工程学院,北京100044 [2]石家庄铁道大学机械工程学院,河北石家庄050043

出　　处：《北京交通大学学报》2013年第1期177-180,共4页JOURNAL OF BEIJING JIAOTONG UNIVERSITY

基　　金：教育部科学技术研究重点课题资助(209004)

摘　　要：转向系统和仪表板的怠速振动是整车NVH(Noise Vibration and Harness)性能的重要组成部分,为了满足NVH要求,运用HyperMesh软件建立汽车仪表板及转向管柱的有限元模型,并运用NASTRAN软件计算仪表板频率在35 Hz以下的局部或整体固有模态特性及转向盘上下振动与左右振动频率.结果表明,仪表板处的局部振动频率与发动机怠速激振频率接近,容易产生怠速共振现象,最后提出改进建议以避免发生怠速共振现象,从而改善汽车的NVH性能.The steering system and instrument panel is the important component of the car NVH performance.In order to meet the NVH requirement,the finite element model of vehicle instrument panel and steering column is established by HyperMesh,and the paper adopts the NASTRAN software to calculate the part or whole inherent modal characteristics of the instrument panel whose frequency under 35 Hz and the vibration frequency with U/D and L/R shape of the steering wheel.The results show that the instrument is close to the engine idle frequency,which is easy to generate idle resonance phenomenon.At last we put forward the advice for avoiding the sympathetic vibration in idle condition so as to improve the NVH of the vehicle.

关 键 词：振动控制 有限元分析 模态分析 共振 仪表板 转向盘 转向管柱 

分 类 号：U463.7[机械工程—车辆工程]