中文摘要：

曲线薄板柔性单元与传统的缺口式柔性单元相比,受载荷时在功能方向上更容易产生大变形。基于此,将曲线薄板柔性单元在平面空间中以一点为圆心,进行均匀阵列组合得到一种新型的环形柔性铰链——分布式叶片形转动柔性铰链。为了对新型柔性铰链进行性能分析,建立铰链的数学模型。鉴于铰链结构复杂,要得到精确模型十分困难,因此对模型进行简化,采用主运动单元伪刚体法建立新型柔性铰链数学模型,并分析新型柔性铰链受纯扭矩载荷时的变形情况。计算得到的结果与非线性有限元分析结果十分接近,证明了所建伪刚体模型的正确性。同时计算结果也表明分布式叶片形转动柔性铰链能够提供较大的转动行程,是一种新型的大变性转动柔性铰链。

英文摘要：

Curved flexure element such as initially-curved segments can deflect more largely and facilely than notch flexure element in functional direction. A new annulus-shaped large-deflection flexure pivot, distributed leafy rotary flexure pivot, is obtained by distributing curved flexure elements around a point in plane space. Mathematic model is established for analyzing flexure pivot performance. A main-motion-element pseudo-rigid-body method is used to simplify mathematic model because it is difficult to set up exact mathematic model for complicated structure of flexure pivot. Flexure pivot performance is analyzed under pure torque and the accuracy of model is demonstrated by comparing pseudo-rigid-body model outcomes to non-linear finite element analysis. The result shows that the distributed leafy rotary flexure pivot has large rotary stroke that is a new large-deflection flexure pivot.