Shape Optimization for Flexure Hinges
Shape Optimization for Flexure Hinges
复制标题
柔性铰链的形状优化
DOI：
10.2493/jjspe.63.1454
复制
发表时间：
1997
期刊：
影响因子：
--
通讯作者：
T. Sugimoto
中科院分区：
文献类型：
--
作者：
T. Oiwa;T. Sugimoto
本研究旨在设计一具有高轴向刚度与高弯曲弹性的最佳型线。传统的圆形缺口和矩形缺口轮廓不是最佳的，因为低的柔性和高的应力集中。在本文中，具有均匀的应力分布的最佳轮廓使用有限元法的约束条件下，统一的轴向刚度和最小厚度的缺口轮廓生成。并与椭圆、圆矩形和高次函数描述的轮廓的柔度进行了比较。结果表明，在最大应力约束条件下，优化后的型线具有更平坦的应力分布和最大的柔度。最佳铰链的弯曲柔量比传统的圆形切口铰链高19%，产生的偏转角比矩形切口铰链高67%。
The purpose of this study is to design an optimum profile of the flexure hinge with high axial stiffness and high bending flexibility. The conventional circular notched and rectangular notched profiles are not optimum because of low flexibility and high stress concentration. In this paper, the optimum profile with uniform stress distribution was generated using the finite element method under constraint conditions which unify the axial stiffness and minimum thickness of the notched profiles. Moreover, the flexibility of the optimum profile was compared with the flexibility of ellipse profiles, round rectangular profiles and profiles described by higher degree functions. As a result, the optimum profile had flatter stress distribution and the highest flexibility under a maximum stress constraint condition. The optimum hinge has 19% higher bending compliance than the conventional circular notched hinge, and produces 67% higher deflection angle than the rectangular notched hinge.