摘要
利用齿轮啮合、摩擦学、传热学、赫兹接触等理论,研究了啮合过程中行星齿轮轮齿接触面的相对滑动速度及齿面摩擦因数的变化规律,推导了行星齿轮轮齿齿面接触应力模型。精确计算了轮齿不同啮合位置的摩擦热流密度以及轮齿端面、轮齿齿面等区域的对流换热系数。建立了轮齿本体温度场有限元分析模型,获得了行星齿轮轮齿稳态温度场。分析了标准齿廓和修形齿廓对接触应力及温度场的影响。在稳态热分析的基础上,采用有限元法进行瞬态热分析,得到了啮合过程中轮齿齿面瞬时温度分布。
Applying the theories of Hertz contact,tribology,gear engagement and heat transfer,the planetary gear was taken as study object,the variation of sliding velocity and friction coefficient was investigated and the contact stress along the contact path was conducted.Heat transfer coefficient of gear end face and teeth surface and heat flux at different engaging positions were calculated.3-D finite element models of gear teeth were established to predict stead temperature field.The influence of standard and modified profiles on temperature field and contact pressure was evaluated.Based on the results of stead thermal analysis,distribution of transient temperature field was investigated by using finite element method.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2011年第10期209-216,共8页
Transactions of the Chinese Society for Agricultural Machinery
基金
国家高技术研究发展计划(863计划)资助项目(2007AA041802)
重庆市科技攻关计划资助项目(2007AC3015)
重庆大学机械传动国家重点实验室自主研究基金资助项目(0301002109137)
关键词
行星齿轮
热流密度
本体温度
闪温
有限元
Planet gear
Heat flux
Bulk temperature
Flash temperature
Finite element
