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基于热网络法和有限元法的柔性轴承热分析
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国家“863”计划项目(2015AA043005);宁波市科技攻关项目(2014B1006);宁波市科技创新团队项目(2015B11012).


Thermal Analysis of Flexible Bearing Based on Thermal Network and Finite Element Method
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    摘要:

    在谐波齿轮传动中,柔性轴承内外圈随着波发生器的旋转不断发生弹性变形,因摩擦及润滑油黏性剪切生成大量的热,引起轴承系统的温升,从而影响柔性轴承的传动性能及疲劳寿命。全面考虑柔性轴承的特殊性,通过对其内部受载的受力分析,得出较为精确的柔性轴承发热量计算方法。采用热边界条件,研究其各零件热量的产生和传递关系,分别应用热网络法和有限元法对其开展稳态热分析,得到其温度场分布,并进行结果的对比。研究结果表明,柔性轴承内圈及外圈工作过程中的温度分布具有对称性,且最高温度区域出现在内圈滚道处,次高温出现在滚动体上,外圈温度略低于内圈温度。

    Abstract:

    In the harmonic gear drive,the elastic deformation of flexible bearing occurs continuously with the rotation of the wave generator,and a large amount of heat is generated because of the friction and the viscosity of the lubricating oil,which causes the temperature rise of the bearing system and influences the transmission performance and the life of flexible bearings.By comprehensively considering the particularity of the flexible bearing,a more accurate calculation method for the calorific value of the flexible bearing was obtained through the analysis of the load on the bearing.The heat generation and transfer relation of each part was studied by using the thermal boundary condition,the thermal analysis was carried out by thermal network method and finite element method,and the distribution of temperature was obtained.The results show that the temperature distribution of the inner ring and outer ring of the flexible bearing is symmetrical,and the highest temperature region appears at the inner ring raceway,the secondary high temperature appears on the rolling body,and the outer ring temperature is slightly lower than the inner ring temperature.

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王亚珍,黄彬,赵坤,宋丽.基于热网络法和有限元法的柔性轴承热分析[J].润滑与密封,2019,44(1):42-46.
. Thermal Analysis of Flexible Bearing Based on Thermal Network and Finite Element Method[J]. Lubrication Engineering,2019,44(1):42-46.

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  • 在线发布日期: 2019-07-04
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