汽车变速箱齿轮轴的模态优化分析  

Modal Analysis and Optimization of Gear Shaft of Automobile Transmission

作　　者：李志刚[1] 贾慧芳[1] 李刚[1] 

机构地区：[1]华东交通大学载运工具与装备教育部重点实验室,江西南昌330013

出　　处：《机械设计与制造》2014年第6期227-229,共3页Machinery Design & Manufacture

基　　金：江西省教育厅科学技术研究项目(GJJ13345)

摘　　要：汽车变速箱是齿轮、齿轮轴、轴承和箱体等组成的机械结构,在内部和外部激励作用下将产生机械振动。当激励的频率在结构固有频率附近时,将使箱体产生振动。齿轮轴是变速箱的关键传动部件,为了提高某汽车变速箱输入齿轮轴的前六阶固有频率,应用参数化建模方法和CAE软件对齿轮轴进行模态分析,获得其固有频率和振型,然后基于集成优化平台,采用自适应模拟退火算法对齿轮轴的轴颈直径进行优化设计。最终提高了齿轮轴的低阶固有频率,避免了发生共振,减少了齿轮轴的振动和噪声,并实现了设计优化过程的自动化。Automobile transmission is a mechanical structure which is made up of gear,gear shaft,bearings,and box,etc.Mechanical vibration will be produced under the effect of internal and external incentives.When incentive frequency nears the structure natural frequency,the box will engender vibration.Gear shaft is the key transmission parts,aimed at improving inherent frequencies of the first 6 order of gear shaft of a automobile transmission.The gear shaft is modal analyzed with adopting parametric modeling method and CAE software,and the inherent frequencies and vibration mode are obtained Based on the Integrated optimization platform,the adoptive simulated annealing method is adopted to the optimization design in respect of the radius of neck of shaft.The low inherent frequencies are improved in order to avoid resonance and decrease vibration and noise.The automation of the optimization design process is realized.

关 键 词：齿轮轴 模态分析 自适应模拟退火算法 优化 

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