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.
出处
《振动与冲击》
EI
CSCD
北大核心
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
关键词
船用齿轮箱
耦合振动
固有特性
动态响应
噪声预估
large burden marine gearbox
coupled vibration
natural characteristic
dynamic response
noise preestimation
