中国机械工程

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S形折叠式柔性铰链结构设计

闫凯1,2,3;张静1,2,3;寇子明1,2,3   

  1. 1.太原理工大学机械工程学院,太原,030024
    2.太原理工大学山西省矿山流体控制工程实验室,太原,030024
    3.太原理工大学矿山流体控制国家地方联合工程实验室,太原,030024
  • 出版日期:2017-07-25 发布日期:2017-07-26
  • 基金资助:
    国家自然科学基金资助项目(51505319);
    太原理工大学校基金资助项目(2014TD040);
    太原理工大学人才引进基金资助项目(tyut-rc201448a)
    National Natural Science Foundation of China (No. 51505319)

Structure Design of S-type Foldable Flexible Hinges

YAN Kai1,2,3;ZHANG Jing1,2,3;KOU Ziming1,2,3   

  1. 1.College of Mechanical Engineering,Taiyuan University of Technology,Taiyuan,030024
    2.Shanxi Province Mineral Fluid Controlling Engineering Laboratory,Taiyuan University of Technology,Taiyuan,030024
    3.National-local Joint Engineering Laboratory of Mining Fluid Control,Taiyuan University of Technology,Taiyuan,030024
  • Online:2017-07-25 Published:2017-07-26
  • Supported by:
    National Natural Science Foundation of China (No. 51505319)

摘要: 为了减小柔性铰链的转动刚度,依据串并联关系,设计了S形折叠式柔性铰链。使用伪刚体法和能量法,建立了S形柔性铰链的刚度模型。利用ANSYS建立了该柔性铰链的有限元模型,对铰链进行了刚度和应力分析,并将其与理论值进行了比较,得到刚度误差约为3%,验证了刚度模型的准确性。当转角达到最大值±35°时,安全系数为4,符合设计要求。

关键词: 柔性铰链, 伪刚体法, 能量法, 等效刚度, 有限元分析

Abstract: According to principles of flexure hinge series and parallel relationship, a S-type foldable flexible hinge was designed in order to reduce flexibility and get a larger corner of the flexible hinges. Using pseudo rigid-body method and energy method, the stiffness model of S-type flexure hinges was deduced. By ANSYS, a finite element model of the flexible hinges was built, and the stiffness and stress analyses of the S-type hinges were carried out. It is found that the stiffness of errors are about 3% by comparing the simulation values and theoretical values. As a result, the stiffness model of S-type flexure hinges is proved right. When the rotational degrees about the flexure hinge are up to ±35°, the safety of factor is as 4. So the S-type foldable flexible hinges fully meet the design requirements.

Key words: flexure hinge, pseudo-rigid-body method, energy method, equivalent stiffness, finite element analysis

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