摘要
研究轴承的发热、传热过程,可为轴承动态油膜的热失稳研究提供理论支持。建立滚动轴承油气或油雾润滑下的热节点传热模型,利用热网络法建立温度场计算模型,并考虑轴承转速、载荷、离心力和自旋对温升的影响,计算出各节点的温度。结果表明,角接触球轴承的热生成与轴承转速、载荷、离心力和自旋有关,转速越高,载荷越大,则轴承的温升越高;随着转速增大,离心力和自旋对温升的影响增大,尤其高速情况下,离心力和自旋对轴承温升的影响不可忽略。
The study of the generation and transfer process of the heat in bearings can provide theoretic support for the research of thermal un-stability of dynamic oil film of bearings.Heat transfer model of thermal nodes was built for the ball bearing which was lubricated by oil air or oil mist.The temperature field calculation model was established with the thermal network method, and the temperature for each node was calculated with considering of effects of the rotational speed, the load ,the centrifugal force and the spinning of the bearing on the temperature rise.Results show that the heat generation of angular contact ball bearings is related to spinning, centrifugal force, load and rotational speed. Higher speed and heavier load will lead to higher temperature rise.Along with the .increasing of rotational speed, effects of spinning and centrifugal force on temperature rise are increased.Therefore, effects of the centrifugal force and spinning on the temperature field can not be neglected, especially in high speed bearings.
出处
《润滑与密封》
CAS
CSCD
北大核心
2015年第12期37-41,45,共6页
Lubrication Engineering
基金
国家自然科学基金项目(51475250
51305220)
山东省自然科学基金项目(ZR2014JL037)
关键词
角接触球轴承
热网络法
自旋
离心力
angular contact ball bearings
thermal network
spinning
centrifugal force
