分析单曲率圆弧、双曲率圆弧、三曲率圆弧、椭圆和流线形等多种轴肩过渡曲线的设计方法，利用有限元软件Abaqus对这些曲线进行建模分析。对于单曲率圆弧，应力集中系数和应力集中角度随着过渡半径的增大而减小，但是应力集中系数减小的效果并不十分明显。流线形过渡曲线基本消除了应力集中，其应力集中系数仅为1.004。双曲率圆弧、三曲率圆弧和椭圆过渡曲线也都将应力集中系数降低到1.05以下，适于实际工程应用。
The design methods of single-radius, two-radii, three-radii, elliptical and streamline shoulder transition curves are analyzed and they are modeled by Abaqus. For single-radius shoulder transition curve, both the stress concentration factor and the stress concentration angle decrease as the transition radius increases, but the decrease of the stress concentration factor is not significant. The stress concentration factor of the streamline shoulder transition curve is reduced to 1.004. Two-radii, three-radii and elliptical shoulder transition curves all make the stress concentration factor below 1.05 and they are suitable for engineering application.
2017,39(5): 38-41 收稿日期：2016-05-11
DOI：10.3404/j.issn.1672-7619.2017.05.008
分类号：U664.121
作者简介：屠星星(1990-),男,硕士,助理工程师,主要从事轮机设计工作
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