大功率船用齿轮箱耦合非线性动态特性分析及噪声预估  

Coupled nonlinear dynamic characteristics analysis and noise preestimation of a large burden marine gearbox

作　　者：陆波[1,2] 朱才朝[1] 宋朝省[1] 王海霞[1] 

机构地区：[1]重庆大学机械传动国家重点实验室,重庆400044 [2]西南科技大学制造科学与工程学院,绵阳621010

出　　处：《振动与冲击》2009年第4期76-80,共5页Journal of Vibration and Shock

基　　金：国家十一五科技支撑计划资助项目(2006BAF01B07-01);新世纪优秀人才计划(NCET-05-0766)资助项目

摘　　要：对某大型船用齿轮箱的动态特性进行分析,将系统分为传动子系统和结构子系统,通过支撑轴承把两个子系统耦合起来,建立齿轮-轴-轴承-箱体耦合系统三维有限元模型。在研究斜齿轮接触线变化规律基础上,提出了一种计算斜齿轮时变刚度的方法。在考虑传动子系统内部激励和外部激励的影响下,对系统动态特性进行了数值仿真,得出了结构子系统各点的振动位移、速度等动态评价指标,以及系统的结构预估噪声,为船用齿轮箱系统动态性能优化提供了理论依据。A 3-D finite element model for a gear-rotor-bearing-box coupled system was developed by coupling a transmission subsystem and a structure subsystem with support of bearings for dynamic characteristic analysis of a large burden marine gearbox. Based on change law of contact line of helical gears, a method of calculating their time-varying stiffness was proposed. Considering the effect of internal and external excitations on the transmission subsystem, the dynamic characteristic of the system was numerically simulated. The dynamic evaluating indices of the structure subsystem, such as, vibration displacement and velocity, and the structural preestimated noise were obtained. The results lay a theoretical basis to optimize the dynamic performance of a large burden marine gearbox.

关 键 词：船用齿轮箱 耦合振动 固有特性 动态响应 噪声预估 

分 类 号：TH113.1[机械工程—机械设计及理论]