摘要
在分析现有柔轮强度研究方法的基础上,提出了考虑温度场影响的柔轮应力的分析方法。建立了包含轮齿的精确柔轮有限元分析模型,更为真实地反映了齿圈及齿槽所引起的应力集中对柔轮强度的影响,并采用ANSYS软件提供的间接耦合分析技术,对柔轮进行应力分析与温度效应相互耦合的计算,获得了柔轮工作过程中内外热源产生的温度场对其应力的影响以及柔轮应力分布规律。结果表明:柔轮筒体的应力受温度场的影响并不明显,但柔轮齿圈上的应力受温度场的影响不容忽视。
Based on the existing analysis of flexspline strength, an analysis method of stress of flexspline considering the thermal effect is proposed. The exact finite element model of flexspline including tooth is built, thus the influence of stress concentration caused by teeth and tooth spaces on flexspline strength can be better refected. Utilizing the thermal-structural coupling analysis of ANSYS, the coupling calculation between stress analysis of flexs- pline and thermal effect is performed. Therefore, a new analysis method of stress of flexspline is obtained under the actual working condition, and the influences of thermal field on stress and its distribution are obtained too. The a- nalysis results show that the influence of thermal field on the stress of a flexible cylinder is not obvious,but the influence of the tooth i＇im on the stress of a flexspline is obvious.
出处
《机械科学与技术》
CSCD
北大核心
2009年第7期955-959,共5页
Mechanical Science and Technology for Aerospace Engineering
关键词
谐波齿轮
柔轮
温度场
应力
有限元方法
harmonic drive
flexspline
thermal field
stress
FEM （ finite element method）
