翟自翔 刘胜

摘  要： 为寻找柔度更大的椭圆柔性铰链，将切口开槽与孔隙结构引入柔性铰链中，设计新型的椭圆柔性铰链。运用Solidworks对普通椭圆柔性铰链、含开槽式椭圆柔性铰链、含孔结构的椭圆柔性铰链建立实体模型，采用有限元分析法通过ANSY Workbench分别对这三种铰链进行柔度分析与疲劳分析。仿真结果表明：在椭圆柔性铰链中引入切口开槽或孔隙结构，均可增加铰链的柔度，同时也会降低铰链的疲劳失效安全系数。为含开槽式椭圆柔性铰链与含孔结构椭圆柔性铰链的疲劳研究提供参考。

关键词： 椭圆铰链;疲劳;开槽;孔结构;柔度

中图分类号： TH122    文献标识码： A    DOI：10.3969/j.issn.1003-6970.2020.06.044

本文著录格式：翟自翔，刘胜. 基于ANSYS的新型椭圆铰链疲劳仿真分析[J]. 软件，2020，41（06）：217221

【Abstract】： In order to obtain the greater flexibility of elliptical flexible hinge， the incision opening and pore structure are introduced into the flexible hinge. A new type of elliptical flexible hinge was designed. The 3D model of elliptical flexible hinge， elliptical flexible hinge with slot and elliptical flexible hinge with porous structure was built by Solidworks. The flexibility analysis and fatigue analysis were carried out by ANSYS Workbench. The simulation results show that the introduction of incision opening or pore structure in the elliptical flexible hinge can increase the flexibility of the hinge， and also reduce the fatigue failure safety factor of the hinge. It provides reference for the study of fatigue about elliptical flexible hinge with slot and elliptical flexible hinge with porous structure.

【Key words】： Elliptical flexible hinge; Fatigue; Slot; Porous structure; Flexibility

0  引言

柔性铰链是通过材料自身弹性变形来实现所需功能的运动副，其具有体积小、无间隙、无机械摩擦、低噪声等优点。目前常见的柔性铰链有：直圆型柔性铰链、椭圆型柔性铰链、双曲线型柔性铰链、抛物线型柔性铰链、倒圆角直梁型柔性铰链等。

柔性铰链多是在循环载荷下进行工作，因此柔性铰链常产生疲劳失效。Xu W等[1]人研究两种不同的柔性铰链，研究表明椭圆型柔性铰链的疲劳性能优于圆角直梁型铰链。Henein S等[2]研究直圆型柔性铰链的疲劳寿命问题。杜文婷[3]运用临界面法疲劳准则，建立叶型柔性铰链疲劳寿命预测模型。Dirksen F等[4]人柔顺机构拓扑优化与铰链疲劳，探索矩形、圆形和抛物线形铰链的安全系数。Ivanov I等[5]人通过疲劳试验研究柔性铰链，发现铰链转角、加载方式与表面粗糙度等均会影响铰链的疲劳寿命。……