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平面折展機構(gòu)S形柔性鉸鏈設(shè)計與試驗
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國家自然科學(xué)基金資助項目(50975024)


Design and Test of Lamina Emergent Mechanisms S-shaped Flexure Hinge
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    摘要:

    設(shè)計平面折展柔順機構(gòu)的關(guān)鍵技術(shù)之一是設(shè)計柔性鉸鏈。提出了一種用于平面折展柔順機構(gòu)的S形柔性鉸鏈,設(shè)計了該鉸鏈的結(jié)構(gòu)形式,并對其等效剛度進行了分析,推導(dǎo)出該結(jié)構(gòu)形式鉸鏈的彎曲等效剛度和扭轉(zhuǎn)等效剛度計算公式。通過設(shè)計實例的理論計算和有限元仿真分析,驗證了計算公式和仿真模型的正確性。制作了基于S形柔性鉸鏈的平面折展柔順滑塊機構(gòu)的實物模型,仿真分析和測試結(jié)果表明,該機構(gòu)在工作狀態(tài)可具有較大變形,并且滑塊位移達到76mm時仍能保持良好的精度,仿真與測試結(jié)果基本一致,誤差僅為0.76%。

    Abstract:

    Part of the challenge in designing LEMs (Lamina emergent mechanisms) comes in designing the suitable flexure hinges. A new S-shaped flexure hinge used on LEMs was proposed and its structure was designed. The bending stiffness equivalent and torsion stiffness equivalent of the S-shaped flexure hinge 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. The LEMs slider mechanism base on S-shaped flexure hinge was produced. The FEA model and test results prove that this mechanism can produce large deformation with high accuracy in operating state, when the displacement of slider reached to 76.mm, the FEA and test results are basically the same, the deviation between them is 0.76%.

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邱麗芳,孟天祥,張九俏,楊德斌.平面折展機構(gòu)S形柔性鉸鏈設(shè)計與試驗[J].農(nóng)業(yè)機械學(xué)報,2014,45(9):324-328. Qiu Lifang, Meng Tianxiang, Zhang Jiuqiao, Yang Debin. Design and Test of Lamina Emergent Mechanisms S-shaped Flexure Hinge[J]. Transactions of the Chinese Society for Agricultural Machinery,2014,45(9):324-328.

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  • 收稿日期:2014-04-28
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  • 在線發(fā)布日期: 2014-09-10
  • 出版日期: 2014-09-10