热膨胀对滚动轴承内部载荷分布的影响
|
摘要
对热膨胀下轴承内部载荷分布特性展开了研究。建立了向心滚动轴承的静力学平衡分析模型,结合静力平衡方程和热膨胀关系式建立了考虑热膨胀的轴承内部载荷分析模型,并通过Newton-Raphson方法对模型进行求解,分析了不同温升下轴承内部载荷的分布规律。研究表明,当外载荷一定时,热膨胀后轴承内部最大接触载荷增大,负荷区域变小。
The internal load distribution characteristics of bearings under thermal expansion were studied. This paper established the static equilibrium analysis model of the entad rolling bearing, established the internal load analysis model of the bearing considering thermal expansion by combining the equation of static equilibrium and the thermal expansion relationship, solved the above model by Newton-Raphson method and analyzed the distribution law of internal load of bearing under different temperature rises. Studies have shown that when the external load is constant, the maximum contact load inside the bearing increases after thermal expansion increases and the load area becomes smaller.
The internal load distribution characteristics of bearings under thermal expansion were studied. This paper established the static equilibrium analysis model of the entad rolling bearing, established the internal load analysis model of the bearing considering thermal expansion by combining the equation of static equilibrium and the thermal expansion relationship, solved the above model by Newton-Raphson method and analyzed the distribution law of internal load of bearing under different temperature rises. Studies have shown that when the external load is constant, the maximum contact load inside the bearing increases after thermal expansion increases and the load area becomes smaller.
引文
[1]牛蔺楷,曹宏瑞,何正嘉.考虑三维运动和相对滑动的滚动球轴承局部表面损伤动力学建模研究[J].机械工程学报,2015(19):53-59.
[2]朱鹏飞,刘振侠,高文君,等.反转圆柱滚子轴承生热特性研究[J].推进技术,2016,37(12):2329-2335.
[3]米维,闫柯,吴文武,等.考虑热-变形耦合的主轴-轴承系统瞬态热特性分析[J].西安交通大学学报,2015,49(8):52-57.
[4] TARAWNEH C M,COLE K D,WILSON B M,et al.Experiments and models for the thermal response of railroad tapered-roller bearings[J].International journal of heat and mass transfer,2008,51(11):5794-5803.
[5] TARAWNEH C M,FUENTES A A,KYPUROS J A,et al.Thermal modeling of a railroad tapered-roller bearing using finite element analysis[J].Journal of thermal science and engineering applications,2012,4(3):31002.
[6] AI S Y,WANG W Z,WANG Y L,et al.Temperature rise of double-row tapered roller bearings analyzed with the thermal network method[J].Tribology international,2015,87(7):11-22.
[2]朱鹏飞,刘振侠,高文君,等.反转圆柱滚子轴承生热特性研究[J].推进技术,2016,37(12):2329-2335.
[3]米维,闫柯,吴文武,等.考虑热-变形耦合的主轴-轴承系统瞬态热特性分析[J].西安交通大学学报,2015,49(8):52-57.
[4] TARAWNEH C M,COLE K D,WILSON B M,et al.Experiments and models for the thermal response of railroad tapered-roller bearings[J].International journal of heat and mass transfer,2008,51(11):5794-5803.
[5] TARAWNEH C M,FUENTES A A,KYPUROS J A,et al.Thermal modeling of a railroad tapered-roller bearing using finite element analysis[J].Journal of thermal science and engineering applications,2012,4(3):31002.
[6] AI S Y,WANG W Z,WANG Y L,et al.Temperature rise of double-row tapered roller bearings analyzed with the thermal network method[J].Tribology international,2015,87(7):11-22.