梳齿形柔顺铰链的设计与分析

摘要/Abstract

摘要： 提出了一种用于LEMs的基于梳齿形状的新型柔顺铰链，设计了该铰链的结构形式，并对其进行了分析，推导出该结构形式铰链的弯曲等效刚度计算公式。通过设计实例的理论计算和有限元仿真分析，验证了计算公式和仿真模型的正确性，同时也验证了新型铰链的弯曲等效刚度在较大角位移下仍能保持良好的线性。对设计实例的强度进行了校核，在铰链达到最大角位移时具有较大的安全系数。对设计实例的拉伸等效刚度及扭转等效刚度进行了仿真分析，并与文献给出的IT-LEJ及LET铰链的弯曲和拉伸等效刚度进行了比较。

关键词: LEMs, 柔顺机构, 梳齿形铰链, 等效刚度, 有限元分析

Abstract: Part of the challenge in designing LEMs (Lamina Emergent Mechanisms) comes in designing the suitable flexure joints. A new Comb-shaped flexure joint was proposed and its structure was designed. The equivalent stiffness of the Comb-shaped flexure joint was presented. By theoretical calculation and finite element simulation analysis of the design example, the correctness of the calculation formula and simulation models was verified. Meanwhile, the equivalent stiffness of the new joint in large angular displacement can still maintain a linear relationship. The strength of the design example was checked in the case of the maximum angular displacement of the joint. Tension stiffness and torsion stiffness of the joint was also simulated and analyzed. The bending stiffness and tension stiffness were compared among the comb-shaped flexure joint, IT-LEJ joint and LET joint.

Key words: LEMs, compliant mechanisms, comb-shaped flexure joint, equivalent stiffness, finite element analysis

邱丽芳孟天祥张九俏杨德斌. 梳齿形柔顺铰链的设计与分析[J]. .

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