基于ANSYS/LS-DYNA的摇臂轴承温度场分析  

Analysis on Temperature Field of Rocker Arm Bearings Based on ANSYS/LS-DYNA

作　　者：张凯[1] 袁祖强[1] 孙芃[1] ZHANG Kai;YUAN Zuqiang;SUN Peng(Institute of Automobile and Construction Machinery,Nanjing Tech University,Nanjing 211800,China)

机构地区：[1]南京工业大学车辆与工程机械研究所,南京211800

出　　处：《轴承》2018年第11期9-13,共5页Bearing

摘　　要：针对摇臂轴承的特殊结构及运动特性,介绍了运动过程中产生热量的计算方法,在此基础上推导了有限元分析所需的热流密度和对流换热系数的计算方法,并以摇臂轴承(滚轮轴承F03. 028-00)为例建立有限元模型进行仿真分析。结果表明:摇臂轴承最高温度在距离外圈表面4 mm(滚动体中心偏内侧)位置,最低温度在外圈表面;随发动机转速提高轴承温度升高,温差增大;随环境温度升高,轴承温度升高,温差几乎不变。Aiming at special structure and movement characteristics of rocker arm bearings,the calculation method is introduced for heat generation during movement.The calculation methods are deduced for heat flow density and convection heat transfer coefficient required for finite element analysis.Taking the rocker arm bearings(track roller bearings F03.028-00)as examples,a finite element model is established for simulation analysis.The results show that the maximum temperature of rocker arm bearings is 4 mm from surface of outer rings(medially to center of rolling elements),and the lowest temperature is on surface of outer rings.The temperature of bearing is raised and the temperature difference is increased as rotational speed of engine increases.The temperature of bearing is raised and the temperature difference is almost constant as ambient temperature raises.

关 键 词：摇臂轴承 温度场 仿真分析 

分 类 号：TH133.33[机械工程—机械制造及自动化] TP133[自动化与计算机技术—控制理论与控制工程]