摘要
柔性轴承是谐波减速器中的关键部件,研究柔性轴承的载荷分布和接触应力对柔性轴承的设计和寿命计算至关重要。柔性轴承装配到波发生器会发生预变形,不再适用刚性套圈理论,其内部载荷也会发生变化。利用ANSYS建立柔性轴承的多体接触模型,得到柔性轴承的载荷分布和接触应力,并从薄壁圆环理论和赫兹接触理论验证了仿真分析的合理性。分析结果表明波发生器作用下,装配预变形导致柔性轴承实际承载区间减少,最大滚动体载荷和接触应力增大。研究结果对柔性薄壁轴承的设计及分析提供理论参考和实践指导。
Flexible bearing is the key component of harmonic drive reducer. It is crucial to study load distribution and contact stress for the design and fatigue life of flexible bearing. When flexible bearing was assembled to wave generator, pre-deformation occur. In this situation, the rigid ring theory is not irrational. In this paper, A multi-body contact model of flexible bearing established by ANSYS was used to study the load distribution and contact press , and the simulation result can be verified by the Hertz contact theory and the elasticity theory. Analysis results shows that pre-deformation lead to reduction of carrying area and increasing the maximum load of ball and contact stress. These results provide reliable theoretic base for the design of flexible bearing.
出处
《机械设计与研究》
CSCD
北大核心
2017年第3期91-94,共4页
Machine Design And Research
基金
国家"八六三"计划(2015AA043005)
宁波市科技攻关(2014B1006)
宁波市科技创新团队项目(2015B11012)
关键词
柔性轴承
载荷分布
接触应力
flexible bearing
load distribution
contact stress
