某型汽车变速箱的振动噪声分析  

Noise and Vibration Analysis of a Certain Type of Automobile Gearbox

作　　者：马龙 李玉山[1] 

机构地区：[1]长城汽车股份有限公司技术中心河北省汽车工程技术研究中心,河北保定071000

出　　处：《机械设计与制造》2018年第2期68-70,共3页Machinery Design & Manufacture

摘　　要：针对某型新能源车用两挡变速箱的振动噪声问题,通过NVH试验、理论计算、仿真分析相结合的方法分析引起振动噪声的根源。首先,基于整车NVH主观评价的结果,通过NVH试验采集变速箱振动信号并进行数据处理分析;其次,通过计算变速箱各齿轮副啮合频率及特征阶次,判断各阶噪声的产生位置;最后,使用ANSYS WORKBENCH软件对变速箱壳体进行模态分析进而得出前20阶固有频率,结合试验数据及啮合频率判断产生各阶噪声的共振频率点。基于对变速箱振动噪声的分析,为下一步制定整改措施提供了必要条件。For the vibration and noise problem of a certain type of two-speed gearbox on new energy vehicle , its root causes was analyzed by NVH testing, theoretical calculations, and simulation method. First, based on vehicle NVH subjective evaluation result, by NVH experiment acquiring gearbox vibration signal and processing data for analysis; Second, by computing gearbox each gear pair meshing frequency and charaeteristic step, judge the generation position of each step noise ; A t last, by using ANSYS WORKBENCH prareeding modal anal）sis to get fixedfrequencies for the first 20 steps, combining experiment data and meshing frequency to judge resonance frequency point of generating each step noise. Based on this text of analysisre garding gearbox vibration noise, necessary conditions for next step making rectification measures are provided.

关 键 词：汽车变速箱 NVH试验 齿轮副 啮合频率 模态分析 行星齿轮系 

分 类 号：TH16[机械工程—机械制造及自动化] U463.212[机械工程—车辆工程]